GitHub - LeetCode-in-All/LeetCode-in-All.github.io: 104 LeetCode algorithm problem solutions.

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Data Structure II
Algorithm I
Algorithm II
Binary Search I
Binary Search II
Dynamic Programming I
Programming Skills I
Programming Skills II
Graph Theory I
SQL I
Level 1
Level 2
Udemy
Data Structure I

Data Structure II

Day 1 Array


0136	Single Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Big_O_Time_O(N)_Space_O(1)	1	99.97
0169	Majority Element	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1)	1	100.00
0015	3Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n*log(n))_Space_O(n^2)	29	82.24

Day 2 Array


0075	Sort Colors	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	0	100.00
0056	Merge Intervals	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Big_O_Time_O(n_log_n)_Space_O(n)	8	96.27

Day 3 Array


0048	Rotate Image	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Big_O_Time_O(n^2)_Space_O(1)	0	100.00

Day 4 Array


0240	Search a 2D Matrix II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Divide_and_Conquer, Big_O_Time_O(n+m)_Space_O(1)	7	86.73

Day 5 Array


0238	Product of Array Except Self	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Prefix_Sum, Big_O_Time_O(n^2)_Space_O(n)	1	100.00
0560	Subarray Sum Equals K	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Hash_Table, Prefix_Sum, Big_O_Time_O(n)_Space_O(n)	21	98.97

Day 6 String

Day 7 String


0763	Partition Labels	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	String, Hash_Table, Greedy, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	1	100.00

Day 8 String


0049	Group Anagrams	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Big_O_Time_O(n*k_log_k)_Space_O(n)	6	92.28

Day 9 String


0005	Longest Palindromic Substring	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	7	96.96

Day 10 Linked List


0002	Add Two Numbers	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Math, Linked_List, Recursion, Big_O_Time_O(max(N,M))_Space_O(max(N,M)), AI_can_be_used_to_solve_the_task	1	100.00
0142	Linked List Cycle II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1)	0	100.00

Day 11 Linked List


0160	Intersection of Two Linked Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(M+N)_Space_O(1)	1	99.68

Day 12 Linked List


0024	Swap Nodes in Pairs	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1)	0	100.00

Day 13 Linked List


0025	Reverse Nodes in k-Group	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(k)	0	100.00

Day 14 Stack Queue


0155	Min Stack	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Big_O_Time_O(1)_Space_O(N)	3	100.00

Day 15 Tree


0105	Construct Binary Tree from Preorder and Inorder Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Tree, Binary_Tree, Divide_and_Conquer, Big_O_Time_O(N)_Space_O(N)	3	86.35

Day 16 Tree

Day 17 Tree


0230	Kth Smallest Element in a BST	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(n)_Space_O(n)	1	78.91

Day 18 Tree


0236	Lowest Common Ancestor of a Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n)	10	56.51

Day 19 Graph

Day 20 Heap Priority Queue


0215	Kth Largest Element in an Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Quickselect, Big_O_Time_O(n*log(n))_Space_O(log(n))	5	70.82
0347	Top K Frequent Elements	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Hash_Table, Sorting, Heap_Priority_Queue, Counting, Divide_and_Conquer, Quickselect, Bucket_Sort, Big_O_Time_O(n*log(n))_Space_O(k)	9	97.93

Day 21 Heap Priority Queue

Algorithm I

Day 1 Binary Search


0035	Search Insert Position	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	0	100.00

Day 2 Two Pointers


0189	Rotate Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	0	100.00

Day 3 Two Pointers


0283	Move Zeroes	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	2	79.54

Day 4 Two Pointers

Day 5 Two Pointers


0019	Remove Nth Node From End of List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Two_Pointers, Linked_List, Big_O_Time_O(L)_Space_O(L)	0	100.00

Day 6 Sliding Window


0003	Longest Substring Without Repeating Characters	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n)_Space_O(1)	2	99.52

Day 7 Breadth First Search Depth First Search

Day 8 Breadth First Search Depth First Search

Day 9 Breadth First Search Depth First Search

Day 10 Recursion Backtracking


0021	Merge Two Sorted Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n)	0	100.00
0206	Reverse Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1)	0	100.00

Day 11 Recursion Backtracking


0046	Permutations	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Big_O_Time_O(n*n!)_Space_O(n+n!)	1	95.07

Day 12 Dynamic Programming


0070	Climbing Stairs	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n)	0	100.00
0198	House Robber	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	0	100.00

Day 13 Bit Manipulation

Day 14 Bit Manipulation


0136	Single Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Big_O_Time_O(N)_Space_O(1)	1	99.97

Algorithm II

Day 1 Binary Search


0034	Find First and Last Position of Element in Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	100.00
0033	Search in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	100.00
0074	Search a 2D Matrix	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1)	100.00

Day 2 Binary Search


0153	Find Minimum in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N)	0	100.00

Day 3 Two Pointers


0015	3Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n*log(n))_Space_O(n^2)	29	82.24

Day 4 Two Pointers


0011	Container With Most Water	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Greedy, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	3	95.71

Day 5 Sliding Window


0438	Find All Anagrams in a String	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n+m)_Space_O(1)	6	99.03

Day 6 Breadth First Search Depth First Search


0200	Number of Islands	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(MN)_Space_O(MN)	3	97.76

Day 7 Breadth First Search Depth First Search

Day 8 Breadth First Search Depth First Search

Day 9 Recursion Backtracking


0078	Subsets	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Backtracking, Big_O_Time_O(2^n)_Space_O(n*2^n)	1	70.60

Day 10 Recursion Backtracking


0039	Combination Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Backtracking, Big_O_Time_O(2^n)_Space_O(n+2^n)	1	100.00

Day 11 Recursion Backtracking


0017	Letter Combinations of a Phone Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Backtracking, Big_O_Time_O(4^n)_Space_O(n)	0	100.00
0022	Generate Parentheses	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Big_O_Time_O(2^n)_Space_O(n)	0	100.00
0079	Word Search	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Matrix, Backtracking, Big_O_Time_O(4^(mn))_Space_O(mn)	157	78.97

Day 12 Dynamic Programming


0055	Jump Game	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1)	2	79.47

Day 13 Dynamic Programming


0045	Jump Game II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1)	2	49.02
0062	Unique Paths	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Big_O_Time_O(mn)_Space_O(mn)	0	100.00

Day 14 Dynamic Programming


0005	Longest Palindromic Substring	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	7	96.96

Day 15 Dynamic Programming


0139	Word Break	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Big_O_Time_O(M+max*N)_Space_O(M+N+max)	2	97.08

Day 16 Dynamic Programming


0300	Longest Increasing Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Big_O_Time_O(n*log_n)_Space_O(n)	3	98.63

Day 17 Dynamic Programming


1143	Longest Common Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(nm)_Space_O(nm)	33	46.23

Day 18 Dynamic Programming


0072	Edit Distance	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2)	4	90.13
0322	Coin Change	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Breadth_First_Search, Big_O_Time_O(m*n)_Space_O(amount)	17	91.77

Day 19 Bit Manipulation

Day 20 Others

Day 21 Others

Binary Search I

Day 1

Day 2


0035	Search Insert Position	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	0	100.00

Day 3

Day 4

Day 5


0034	Find First and Last Position of Element in Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	0	100.00

Day 6

Day 7

Day 8


0074	Search a 2D Matrix	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1)	0	100.00

Day 9

Day 10

Day 11


0033	Search in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	0	100.00

Day 12


0153	Find Minimum in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N)	0	100.00

Binary Search II

Day 1

Day 2

Day 3


0300	Longest Increasing Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Big_O_Time_O(n*log_n)_Space_O(n)	3	98.63

Day 4

Day 5


0287	Find the Duplicate Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Two_Pointers, Bit_Manipulation, Big_O_Time_O(n)_Space_O(n)	2	99.82

Day 6

Day 7

Day 8


0240	Search a 2D Matrix II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Divide_and_Conquer, Big_O_Time_O(n+m)_Space_O(1)	7	86.73

Day 9

Day 10

Day 11

Day 12

Day 13

Day 14

Day 15

Day 16

Day 17

Day 18

Day 19

Day 20

Dynamic Programming I

Day 1

Day 2


0070	Climbing Stairs	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n)	0	100.00

Day 3


0198	House Robber	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	0	100.00

Day 4


0055	Jump Game	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1)	2	79.47
0045	Jump Game II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1)	2	49.02

Day 5


0053	Maximum Subarray	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1)	1	100.00

Day 6


0152	Maximum Product Subarray	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1)	1	92.31

Day 7


0121	Best Time to Buy and Sell Stock	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1)	1	100.00

Day 8

Day 9


0139	Word Break	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Big_O_Time_O(M+max*N)_Space_O(M+N+max)	2	97.08
0042	Trapping Rain Water	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Two_Pointers, Stack, Monotonic_Stack, Big_O_Time_O(n)_Space_O(1)	0	100.00

Day 10

Day 11


0096	Unique Binary Search Trees	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Dynamic_Programming, Math, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(n)_Space_O(1)	0	100.00

Day 12

Day 13

Day 14

Day 15


0062	Unique Paths	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Big_O_Time_O(mn)_Space_O(mn)	0	100.00

Day 16


0064	Minimum Path Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Big_O_Time_O(mn)_Space_O(mn)	0	100.00
0221	Maximal Square	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Array, Dynamic_Programming, Matrix, Big_O_Time_O(mn)_Space_O(mn)	7	72.35

Day 17


0005	Longest Palindromic Substring	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	7	96.96

Day 18


0300	Longest Increasing Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Big_O_Time_O(n*log_n)_Space_O(n)	3	98.63

Day 19


1143	Longest Common Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(nm)_Space_O(nm)	33	46.23
0072	Edit Distance	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2)	4	90.13

Day 20


0322	Coin Change	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Breadth_First_Search, Big_O_Time_O(m*n)_Space_O(amount)	17	91.77

Day 21

Programming Skills I

Day 1 Basic Data Type

Day 2 Operator

Day 3 Conditional Statements

Day 4 Loop

Day 5 Function

Day 6 Array


0283	Move Zeroes	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	2	79.54

Day 7 Array

Day 8 String

Day 9 String

Day 10 Linked List and Tree


0104	Maximum Depth of Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(H)	0	100.00

Day 11 Containers and Libraries

Day 12 Class and Object

Programming Skills II

Day 1

Day 2

Day 3

Day 4

Day 5

Day 6


0739	Daily Temperatures	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Stack, Monotonic_Stack, Big_O_Time_O(n)_Space_O(n)	10	94.99

Day 7


0048	Rotate Image	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Big_O_Time_O(n^2)_Space_O(1)	0	100.00

Day 8

Day 9

Day 10

Day 11


0049	Group Anagrams	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Big_O_Time_O(n*k_log_k)_Space_O(n)	6	92.28

Day 12


0438	Find All Anagrams in a String	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n+m)_Space_O(1)	6	99.03

Day 13

Day 14


0138	Copy List with Random Pointer	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Linked_List, Big_O_Time_O(N)_Space_O(N)	0	100.00

Day 15


0002	Add Two Numbers	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Math, Linked_List, Recursion, Big_O_Time_O(max(N,M))_Space_O(max(N,M)), AI_can_be_used_to_solve_the_task	1	100.00

Day 16

Day 17

Day 18


0155	Min Stack	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Big_O_Time_O(1)_Space_O(N)	3	100.00

Day 19

Day 20

Graph Theory I

Day 1 Matrix Related Problems


0200	Number of Islands	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(MN)_Space_O(MN)	3	97.76

Day 2 Matrix Related Problems

Day 3 Matrix Related Problems

Day 4 Matrix Related Problems

Day 5 Matrix Related Problems

Day 6 Matrix Related Problems

Day 7 Standard Traversal

Day 8 Standard Traversal

Day 9 Standard Traversal

Day 10 Standard Traversal

Day 11 Breadth First Search

Day 12 Breadth First Search

Day 13 Graph Theory

Day 14 Graph Theory

SQL I

Day 1 Select

Day 2 Select and Order

Day 3 String Processing Functions

Day 4 Union and Select

Day 5 Union

Day 6 Union

Day 7 Function

Day 8 Function

Day 9 Control of Flow

Day 10 Where

Level 1

Day 1 Prefix Sum

Day 2 String

Day 3 Linked List


0021	Merge Two Sorted Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n)	0	100.00
0206	Reverse Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1)	0	100.00

Day 4 Linked List


0142	Linked List Cycle II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1)	0	100.00

Day 5 Greedy


0121	Best Time to Buy and Sell Stock	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1)	1	100.00

Day 6 Tree


0102	Binary Tree Level Order Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(N)	1	91.09

Day 7 Binary Search

Day 8 Binary Search Tree


0098	Validate Binary Search Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(N)_Space_O(log(N))	0	100.00

Day 9 Graph/BFS/DFS


0200	Number of Islands	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(MN)_Space_O(MN)	3	97.76

Day 10 Dynamic Programming


0070	Climbing Stairs	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n)	0	100.00

Day 11 Dynamic Programming


0062	Unique Paths	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Big_O_Time_O(mn)_Space_O(mn)	0	100.00

Day 12 Sliding Window/Two Pointer


0438	Find All Anagrams in a String	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n+m)_Space_O(1)	6	99.03

Day 13 Hashmap


0001	Two Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n), AI_can_be_used_to_solve_the_task	2	85.97

Day 14 Stack


0394	Decode String	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Stack, Recursion, Big_O_Time_O(n)_Space_O(n)	1	87.68

Day 15 Heap

Level 2

Day 1 Implementation/Simulation

Day 2 String

Day 3 Linked List


0019	Remove Nth Node From End of List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Two_Pointers, Linked_List, Big_O_Time_O(L)_Space_O(L)	0	100.00
0234	Palindrome Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Two_Pointers, Stack, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1)	6	76.07

Day 4 Linked List


0148	Sort List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Sorting, Two_Pointers, Linked_List, Divide_and_Conquer, Merge_Sort, Big_O_Time_O(log(N))_Space_O(log(N))	12	85.82

Day 5 Greedy

Day 6 Tree


0226	Invert Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n)	0	100.00

Day 7 Tree


0543	Diameter of Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n)	1	65.86
0437	Path Sum III	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n)	18	45.66

Day 8 Binary Search


0074	Search a 2D Matrix	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1)	0	100.00
0033	Search in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	0	100.00

Day 9 Binary Search Tree


0230	Kth Smallest Element in a BST	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(n)_Space_O(n)	1	78.91

Day 10 Graph/BFS/DFS

Day 11 Graph/BFS/DFS

Day 12 Dynamic Programming


0198	House Robber	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	0	100.00
0322	Coin Change	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Breadth_First_Search, Big_O_Time_O(m*n)_Space_O(amount)	17	91.77

Day 13 Dynamic Programming


0416	Partition Equal Subset Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Big_O_Time_O(nsums)_Space_O(nsums)	27	94.53
0152	Maximum Product Subarray	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1)	1	92.31

Day 14 Sliding Window/Two Pointer


0003	Longest Substring Without Repeating Characters	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n)_Space_O(1)	2	99.52
0076	Minimum Window Substring	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(s.length())_Space_O(1)	2	99.94

Day 15 Tree


0101	Symmetric Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(log(N))	0	100.00

Day 16 Design


0155	Min Stack	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Big_O_Time_O(1)_Space_O(N)	3	100.00
0208	Implement Trie (Prefix Tree)	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie, Big_O_Time_O(word.length())_or_O(prefix.length())_Space_O(N)	34	99.90

Day 17 Interval


0056	Merge Intervals	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Big_O_Time_O(n_log_n)_Space_O(n)	8	96.27

Day 18 Stack

Day 19 Union Find

Day 20 Brute Force/Backtracking


0039	Combination Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Backtracking, Big_O_Time_O(2^n)_Space_O(n+2^n)	1	100.00
0046	Permutations	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Big_O_Time_O(n*n!)_Space_O(n+n!)	1	95.07

Udemy

Udemy Integers


0136	Single Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Big_O_Time_O(N)_Space_O(1)	1	99.97
0007	Reverse Integer	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_Interview_Questions, Math	1	96.61
0009	Palindrome Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Math	5	77.91

Udemy Strings


0003	Longest Substring Without Repeating Characters	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Big_O_Time_O(n)_Space_O(1)	2	99.52
0020	Valid Parentheses	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, String, Stack, Big_O_Time_O(n)_Space_O(n)	1	98.78
0005	Longest Palindromic Substring	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	7	96.96
0394	Decode String	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Stack, Recursion, Big_O_Time_O(n)_Space_O(n)	1	87.68
0049	Group Anagrams	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Big_O_Time_O(n*k_log_k)_Space_O(n)	6	92.28

Udemy Binary Search


0033	Search in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	0	100.00
0153	Find Minimum in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N)	0	100.00

Udemy Arrays


0121	Best Time to Buy and Sell Stock	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1)	1	100.00
0283	Move Zeroes	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	2	79.54
0001	Two Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n), AI_can_be_used_to_solve_the_task	2	85.97
0189	Rotate Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	0	100.00
0055	Jump Game	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Big_O_Time_O(n)_Space_O(1)	2	79.47
0075	Sort Colors	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	0	100.00
0238	Product of Array Except Self	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Prefix_Sum, Big_O_Time_O(n^2)_Space_O(n)	1	100.00
0041	First Missing Positive	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n)	2	57.59
0239	Sliding Window Maximum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Array, Heap_Priority_Queue, Sliding_Window, Queue, Monotonic_Queue, Big_O_Time_O(n*k)_Space_O(n+k)	58	52.28

Udemy Two Pointers


0042	Trapping Rain Water	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Two_Pointers, Stack, Monotonic_Stack, Big_O_Time_O(n)_Space_O(1)	0	100.00
0015	3Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Big_O_Time_O(n*log(n))_Space_O(n^2)	29	82.24

Udemy Famous Algorithm


0053	Maximum Subarray	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1)	1	100.00
0169	Majority Element	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1)	1	100.00

Udemy Sorting Algorithms

Udemy 2D Arrays/Matrix


0074	Search a 2D Matrix	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1)	0	100.00
0048	Rotate Image	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Big_O_Time_O(n^2)_Space_O(1)	0	100.00
0073	Set Matrix Zeroes	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Matrix, Big_O_Time_O(m*n)_Space_O(1)	1	79.07
0056	Merge Intervals	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Big_O_Time_O(n_log_n)_Space_O(n)	8	96.27

Udemy Linked List


0114	Flatten Binary Tree to Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Linked_List, Big_O_Time_O(N)_Space_O(N)	1	75.27
0024	Swap Nodes in Pairs	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1)	0	100.00
0142	Linked List Cycle II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1)	0	100.00
0141	Linked List Cycle	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1)	0	100.00
0206	Reverse Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1)	0	100.00
0021	Merge Two Sorted Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n)	0	100.00
0160	Intersection of Two Linked Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(M+N)_Space_O(1)	1	99.68
0234	Palindrome Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Two_Pointers, Stack, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(1)	6	76.07
0138	Copy List with Random Pointer	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Linked_List, Big_O_Time_O(N)_Space_O(N)	0	100.00
0025	Reverse Nodes in k-Group	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Linked_List, Recursion, Big_O_Time_O(n)_Space_O(k)	0	100.00
0146	LRU Cache	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Design, Linked_List, Doubly_Linked_List, Big_O_Time_O(1)_Space_O(capacity)	87	50.80

Udemy Tree Stack Queue


0094	Binary Tree Inorder Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Big_O_Time_O(n)_Space_O(n)	0	100.00
0102	Binary Tree Level Order Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(N)	1	91.09
0543	Diameter of Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n)	1	65.86
0226	Invert Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n)	0	100.00
0104	Maximum Depth of Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(H)	0	100.00
0124	Binary Tree Maximum Path Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(N)	1	99.46
0098	Validate Binary Search Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(N)_Space_O(log(N))	0	100.00
0236	Lowest Common Ancestor of a Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n)	10	56.51

Udemy Trie and Heap


0208	Implement Trie (Prefix Tree)	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie, Big_O_Time_O(word.length())_or_O(prefix.length())_Space_O(N)	34	99.90

Udemy Graph


0200	Number of Islands	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Big_O_Time_O(MN)_Space_O(MN)	3	97.76

Udemy Dynamic Programming


0139	Word Break	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Big_O_Time_O(M+max*N)_Space_O(M+N+max)	2	97.08
0152	Maximum Product Subarray	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1)	1	92.31
0198	House Robber	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	0	100.00
0070	Climbing Stairs	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Big_O_Time_O(n)_Space_O(n)	0	100.00
0064	Minimum Path Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Big_O_Time_O(mn)_Space_O(mn)	0	100.00
0300	Longest Increasing Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Big_O_Time_O(n*log_n)_Space_O(n)	3	98.63
1143	Longest Common Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(nm)_Space_O(nm)	33	46.23
0072	Edit Distance	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2)	4	90.13
0010	Regular Expression Matching	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_Interview_Questions, String, Dynamic_Programming, Recursion, Big_O_Time_O(mn)_Space_O(mn)	1	100.00

Udemy Backtracking/Recursion


0022	Generate Parentheses	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Big_O_Time_O(2^n)_Space_O(n)	0	100.00
0039	Combination Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Backtracking, Big_O_Time_O(2^n)_Space_O(n+2^n)	1	100.00
0078	Subsets	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Backtracking, Big_O_Time_O(2^n)_Space_O(n*2^n)	1	70.60
0017	Letter Combinations of a Phone Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Backtracking, Big_O_Time_O(4^n)_Space_O(n)	0	100.00
0046	Permutations	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Big_O_Time_O(n*n!)_Space_O(n+n!)	1	95.07

Udemy Bit Manipulation


0338	Counting Bits	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Dynamic_Programming, Bit_Manipulation, Big_O_Time_O(num)_Space_O(num)	2	86.73

Udemy Design


0155	Min Stack	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Big_O_Time_O(1)_Space_O(N)	3	100.00

Data Structure I

Day 1 Array


0053	Maximum Subarray	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Big_O_Time_O(n)_Space_O(1)	1	100.00

Day 2 Array


0001	Two Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Big_O_Time_O(n)_Space_O(n), AI_can_be_used_to_solve_the_task	2	85.97

Day 3 Array


0121	Best Time to Buy and Sell Stock	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Big_O_Time_O(N)_Space_O(1)	1	100.00

Day 4 Array

Day 5 Array


0074	Search a 2D Matrix	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1)	0	100.00

Day 6 String

Day 7 Linked List


0141	Linked List Cycle	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Big_O_Time_O(N)_Space_O(1)	0	100.00
0021	Merge Two Sorted Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(m+n)_Space_O(m+n)	0	100.00

Day 8 Linked List


0206	Reverse Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Big_O_Time_O(N)_Space_O(1)	0	100.00

Day 9 Stack Queue


0020	Valid Parentheses	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, String, Stack, Big_O_Time_O(n)_Space_O(n)	1	98.78

Day 10 Tree


0094	Binary Tree Inorder Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Big_O_Time_O(n)_Space_O(n)	0	100.00

Day 11 Tree


0102	Binary Tree Level Order Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(N)	1	91.09
0104	Maximum Depth of Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(H)	0	100.00
0101	Symmetric Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(N)_Space_O(log(N))	0	100.00

Day 12 Tree


0226	Invert Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Big_O_Time_O(n)_Space_O(n)	0	100.00

Day 13 Tree

Day 14 Tree


0098	Validate Binary Search Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Big_O_Time_O(N)_Space_O(log(N))	0	100.00

Algorithms

#	Title	Difficulty	Tag	Time, ms	Time, %
1143	Longest Common Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Dynamic_Programming, Algorithm_II_Day_17_Dynamic_Programming, Dynamic_Programming_I_Day_19, Udemy_Dynamic_Programming, Big_O_Time_O(nm)_Space_O(nm)	33
0763	Partition Labels	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	String, Hash_Table, Greedy, Two_Pointers, Data_Structure_II_Day_7_String, Big_O_Time_O(n)_Space_O(1)	1
0739	Daily Temperatures	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Stack, Monotonic_Stack, Programming_Skills_II_Day_6, Big_O_Time_O(n)_Space_O(n)	10
0647	Palindromic Substrings	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	String, Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n)	2
0560	Subarray Sum Equals K	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Hash_Table, Prefix_Sum, Data_Structure_II_Day_5_Array, Big_O_Time_O(n)_Space_O(n)	21
0543	Diameter of Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Level_2_Day_7_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(n)_Space_O(n)	1
0494	Target Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Array, Dynamic_Programming, Backtracking, Big_O_Time_O(n(sum+s))_Space_O(n(sum+s))	9
0438	Find All Anagrams in a String	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Hash_Table, Sliding_Window, Algorithm_II_Day_5_Sliding_Window, Programming_Skills_II_Day_12, Level_1_Day_12_Sliding_Window/Two_Pointer, Big_O_Time_O(n+m)_Space_O(1)	6
0437	Path Sum III	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Depth_First_Search, Tree, Binary_Tree, Level_2_Day_7_Tree, Big_O_Time_O(n)_Space_O(n)	18
0416	Partition Equal Subset Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Level_2_Day_13_Dynamic_Programming, Big_O_Time_O(nsums)_Space_O(nsums)	27
0394	Decode String	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Stack, Recursion, Level_1_Day_14_Stack, Udemy_Strings, Big_O_Time_O(n)_Space_O(n)	1
0347	Top K Frequent Elements	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Hash_Table, Sorting, Heap_Priority_Queue, Counting, Divide_and_Conquer, Quickselect, Bucket_Sort, Data_Structure_II_Day_20_Heap_Priority_Queue, Big_O_Time_O(n*log(n))_Space_O(k)	9
0338	Counting Bits	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Dynamic_Programming, Bit_Manipulation, Udemy_Bit_Manipulation, Big_O_Time_O(num)_Space_O(num)	2
0322	Coin Change	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Breadth_First_Search, Algorithm_II_Day_18_Dynamic_Programming, Dynamic_Programming_I_Day_20, Level_2_Day_12_Dynamic_Programming, Big_O_Time_O(m*n)_Space_O(amount)	17
0300	Longest Increasing Subsequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Binary_Search, Algorithm_II_Day_16_Dynamic_Programming, Binary_Search_II_Day_3, Dynamic_Programming_I_Day_18, Udemy_Dynamic_Programming, Big_O_Time_O(n*log_n)_Space_O(n)	3
0295	Find Median from Data Stream	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Sorting, Two_Pointers, Design, Heap_Priority_Queue, Data_Stream, Big_O_Time_O(n*log_n)_Space_O(n)	151
0287	Find the Duplicate Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Two_Pointers, Bit_Manipulation, Binary_Search_II_Day_5, Big_O_Time_O(n)_Space_O(n)	2
0283	Move Zeroes	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Array, Two_Pointers, Algorithm_I_Day_3_Two_Pointers, Programming_Skills_I_Day_6_Array, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1)	2
0240	Search a 2D Matrix II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Divide_and_Conquer, Data_Structure_II_Day_4_Array, Binary_Search_II_Day_8, Big_O_Time_O(n+m)_Space_O(1)	7
0239	Sliding Window Maximum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Array, Heap_Priority_Queue, Sliding_Window, Queue, Monotonic_Queue, Udemy_Arrays, Big_O_Time_O(n*k)_Space_O(n+k)	58
0238	Product of Array Except Self	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Prefix_Sum, Data_Structure_II_Day_5_Array, Udemy_Arrays, Big_O_Time_O(n^2)_Space_O(n)	1
0236	Lowest Common Ancestor of a Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Data_Structure_II_Day_18_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(n)_Space_O(n)	10
0234	Palindrome Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Two_Pointers, Stack, Linked_List, Recursion, Level_2_Day_3_Linked_List, Udemy_Linked_List, Big_O_Time_O(n)_Space_O(1)	6
0230	Kth Smallest Element in a BST	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_II_Day_17_Tree, Level_2_Day_9_Binary_Search_Tree, Big_O_Time_O(n)_Space_O(n)	1
0226	Invert Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_12_Tree, Level_2_Day_6_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(n)_Space_O(n)	0
0221	Maximal Square	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_16, Big_O_Time_O(mn)_Space_O(mn)	7
0215	Kth Largest Element in an Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Heap_Priority_Queue, Divide_and_Conquer, Quickselect, Data_Structure_II_Day_20_Heap_Priority_Queue, Big_O_Time_O(n*log(n))_Space_O(log(n))	5
0208	Implement Trie (Prefix Tree)	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Design, Trie, Level_2_Day_16_Design, Udemy_Trie_and_Heap, Big_O_Time_O(word.length())_or_O(prefix.length())_Space_O(N)	34
0207	Course Schedule	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Graph, Topological_Sort, Big_O_Time_O(N)_Space_O(N)	3
0206	Reverse Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Data_Structure_I_Day_8_Linked_List, Algorithm_I_Day_10_Recursion_Backtracking, Level_1_Day_3_Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(1)	0
0200	Number of Islands	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Depth_First_Search, Breadth_First_Search, Matrix, Union_Find, Algorithm_II_Day_6_Breadth_First_Search_Depth_First_Search, Graph_Theory_I_Day_1_Matrix_Related_Problems, Level_1_Day_9_Graph/BFS/DFS, Udemy_Graph, Big_O_Time_O(MN)_Space_O(MN)	3
0198	House Robber	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_3, Level_2_Day_12_Dynamic_Programming, Udemy_Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	0
0189	Rotate Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Two_Pointers, Algorithm_I_Day_2_Two_Pointers, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1)	0
0169	Majority Element	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Sorting, Counting, Divide_and_Conquer, Data_Structure_II_Day_1_Array, Udemy_Famous_Algorithm, Big_O_Time_O(n)_Space_O(1)	1
0160	Intersection of Two Linked Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_II_Day_11_Linked_List, Udemy_Linked_List, Big_O_Time_O(M+N)_Space_O(1)	1
0155	Min Stack	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Stack, Design, Data_Structure_II_Day_14_Stack_Queue, Programming_Skills_II_Day_18, Level_2_Day_16_Design, Udemy_Design, Big_O_Time_O(1)_Space_O(N)	3
0153	Find Minimum in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Algorithm_II_Day_2_Binary_Search, Binary_Search_I_Day_12, Udemy_Binary_Search, Big_O_Time_O(log_N)_Space_O(log_N)	0
0152	Maximum Product Subarray	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Dynamic_Programming_I_Day_6, Level_2_Day_13_Dynamic_Programming, Udemy_Dynamic_Programming, Big_O_Time_O(N)_Space_O(1)	1
0148	Sort List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Sorting, Two_Pointers, Linked_List, Divide_and_Conquer, Merge_Sort, Level_2_Day_4_Linked_List, Big_O_Time_O(log(N))_Space_O(log(N))	12
0146	LRU Cache	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Design, Linked_List, Doubly_Linked_List, Udemy_Linked_List, Big_O_Time_O(1)_Space_O(capacity)	87
0142	Linked List Cycle II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_II_Day_10_Linked_List, Level_1_Day_4_Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(1)	0
0141	Linked List Cycle	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Two_Pointers, Linked_List, Data_Structure_I_Day_7_Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(1)	0
0139	Word Break	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Dynamic_Programming, Trie, Memoization, Algorithm_II_Day_15_Dynamic_Programming, Dynamic_Programming_I_Day_9, Udemy_Dynamic_Programming, Big_O_Time_O(M+max*N)_Space_O(M+N+max)	2
0138	Copy List with Random Pointer	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Hash_Table, Linked_List, Programming_Skills_II_Day_14, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(N)	0
0136	Single Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Data_Structure_II_Day_1_Array, Algorithm_I_Day_14_Bit_Manipulation, Udemy_Integers, Big_O_Time_O(N)_Space_O(1)	1
0131	Palindrome Partitioning	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Big_O_Time_O(N2^N)_Space_O(2^NN)	16
0128	Longest Consecutive Sequence	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Union_Find, Big_O_Time_O(N_log_N)_Space_O(1)	18
0124	Binary Tree Maximum Path Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Depth_First_Search, Tree, Binary_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(N)_Space_O(N)	1
0121	Best Time to Buy and Sell Stock	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Data_Structure_I_Day_3_Array, Dynamic_Programming_I_Day_7, Level_1_Day_5_Greedy, Udemy_Arrays, Big_O_Time_O(N)_Space_O(1)	1
0114	Flatten Binary Tree to Linked List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Linked_List, Udemy_Linked_List, Big_O_Time_O(N)_Space_O(N)	1
0105	Construct Binary Tree from Preorder and Inorder Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Tree, Binary_Tree, Divide_and_Conquer, Data_Structure_II_Day_15_Tree, Big_O_Time_O(N)_Space_O(N)	3
0104	Maximum Depth of Binary Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree, Programming_Skills_I_Day_10_Linked_List_and_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(N)_Space_O(H)	0
0102	Binary Tree Level Order Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree, Level_1_Day_6_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(N)_Space_O(N)	1
0101	Symmetric Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Breadth_First_Search, Tree, Binary_Tree, Data_Structure_I_Day_11_Tree, Level_2_Day_15_Tree, Big_O_Time_O(N)_Space_O(log(N))	0
0098	Validate Binary Search Tree	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Binary_Search_Tree, Data_Structure_I_Day_14_Tree, Level_1_Day_8_Binary_Search_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(N)_Space_O(log(N))	0
0096	Unique Binary Search Trees	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Dynamic_Programming, Math, Tree, Binary_Tree, Binary_Search_Tree, Dynamic_Programming_I_Day_11, Big_O_Time_O(n)_Space_O(1)	0
0094	Binary Tree Inorder Traversal	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Depth_First_Search, Tree, Binary_Tree, Stack, Data_Structure_I_Day_10_Tree, Udemy_Tree_Stack_Queue, Big_O_Time_O(n)_Space_O(n)	0
0084	Largest Rectangle in Histogram	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Stack, Monotonic_Stack, Big_O_Time_O(n_log_n)_Space_O(log_n)	11
0079	Word Search	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Matrix, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking, Big_O_Time_O(4^(mn))_Space_O(mn)	157
0078	Subsets	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Bit_Manipulation, Backtracking, Algorithm_II_Day_9_Recursion_Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(2^n)_Space_O(n*2^n)	1
0076	Minimum Window Substring	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Level_2_Day_14_Sliding_Window/Two_Pointer, Big_O_Time_O(s.length())_Space_O(1)	2
0075	Sort Colors	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Data_Structure_II_Day_2_Array, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1)	0
0074	Search a 2D Matrix	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Binary_Search, Matrix, Data_Structure_I_Day_5_Array, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_8, Level_2_Day_8_Binary_Search, Udemy_2D_Arrays/Matrix, Big_O_Time_O(endRow+endCol)_Space_O(1)	0
0073	Set Matrix Zeroes	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Matrix, Udemy_2D_Arrays/Matrix, Big_O_Time_O(m*n)_Space_O(1)	1
0072	Edit Distance	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, String, Dynamic_Programming, Algorithm_II_Day_18_Dynamic_Programming, Dynamic_Programming_I_Day_19, Udemy_Dynamic_Programming, Big_O_Time_O(n^2)_Space_O(n2)	4
0070	Climbing Stairs	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Memoization, Algorithm_I_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_2, Level_1_Day_10_Dynamic_Programming, Udemy_Dynamic_Programming, Big_O_Time_O(n)_Space_O(n)	0
0064	Minimum Path Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Matrix, Dynamic_Programming_I_Day_16, Udemy_Dynamic_Programming, Big_O_Time_O(mn)_Space_O(mn)	0
0062	Unique Paths	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Dynamic_Programming, Math, Combinatorics, Algorithm_II_Day_13_Dynamic_Programming, Dynamic_Programming_I_Day_15, Level_1_Day_11_Dynamic_Programming, Big_O_Time_O(mn)_Space_O(mn)	0
0056	Merge Intervals	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Data_Structure_II_Day_2_Array, Level_2_Day_17_Interval, Udemy_2D_Arrays/Matrix, Big_O_Time_O(n_log_n)_Space_O(n)	8
0055	Jump Game	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Greedy, Algorithm_II_Day_12_Dynamic_Programming, Dynamic_Programming_I_Day_4, Udemy_Arrays, Big_O_Time_O(n)_Space_O(1)	2
0053	Maximum Subarray	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Divide_and_Conquer, Data_Structure_I_Day_1_Array, Dynamic_Programming_I_Day_5, Udemy_Famous_Algorithm, Big_O_Time_O(n)_Space_O(1)	1
0051	N-Queens	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Array, Backtracking, Big_O_Time_O(N!)_Space_O(N)	1
0049	Group Anagrams	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, String, Hash_Table, Sorting, Data_Structure_II_Day_8_String, Programming_Skills_II_Day_11, Udemy_Strings, Big_O_Time_O(n*k_log_k)_Space_O(n)	6
0048	Rotate Image	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Math, Matrix, Data_Structure_II_Day_3_Array, Programming_Skills_II_Day_7, Udemy_2D_Arrays/Matrix, Big_O_Time_O(n^2)_Space_O(1)	0
0046	Permutations	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Backtracking, Algorithm_I_Day_11_Recursion_Backtracking, Level_2_Day_20_Brute_Force/Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(n*n!)_Space_O(n+n!)	1
0045	Jump Game II	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Dynamic_Programming, Greedy, Algorithm_II_Day_13_Dynamic_Programming, Dynamic_Programming_I_Day_4, Big_O_Time_O(n)_Space_O(1)	2
0042	Trapping Rain Water	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Dynamic_Programming, Two_Pointers, Stack, Monotonic_Stack, Dynamic_Programming_I_Day_9, Udemy_Two_Pointers, Big_O_Time_O(n)_Space_O(1)	0
0041	First Missing Positive	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Udemy_Arrays, Big_O_Time_O(n)_Space_O(n)	2
0039	Combination Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Backtracking, Algorithm_II_Day_10_Recursion_Backtracking, Level_2_Day_20_Brute_Force/Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(2^n)_Space_O(n+2^n)	1
0035	Search Insert Position	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Array, Binary_Search, Algorithm_I_Day_1_Binary_Search, Binary_Search_I_Day_2, Big_O_Time_O(log_n)_Space_O(1)	0
0034	Find First and Last Position of Element in Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_5, Big_O_Time_O(log_n)_Space_O(1)	0
0033	Search in Rotated Sorted Array	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Algorithm_II_Day_1_Binary_Search, Binary_Search_I_Day_11, Level_2_Day_8_Binary_Search, Udemy_Binary_Search, Big_O_Time_O(log_n)_Space_O(1)	0
0032	Longest Valid Parentheses	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, String, Dynamic_Programming, Stack, Big_O_Time_O(n)_Space_O(1)	1
0031	Next Permutation	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Array, Two_Pointers, Big_O_Time_O(n)_Space_O(1)	0
0025	Reverse Nodes in k-Group	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Linked_List, Recursion, Data_Structure_II_Day_13_Linked_List, Udemy_Linked_List, Big_O_Time_O(n)_Space_O(k)	0
0024	Swap Nodes in Pairs	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Linked_List, Recursion, Data_Structure_II_Day_12_Linked_List, Udemy_Linked_List, Big_O_Time_O(n)_Space_O(1)	0
0023	Merge k Sorted Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Heap_Priority_Queue, Linked_List, Divide_and_Conquer, Merge_Sort, Big_O_Time_O(knlog(k))_Space_O(log(k))	1
0022	Generate Parentheses	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(2^n)_Space_O(n)	0
0021	Merge Two Sorted Lists	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Linked_List, Recursion, Data_Structure_I_Day_7_Linked_List, Algorithm_I_Day_10_Recursion_Backtracking, Level_1_Day_3_Linked_List, Udemy_Linked_List, Big_O_Time_O(m+n)_Space_O(m+n)	0
0020	Valid Parentheses	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, String, Stack, Data_Structure_I_Day_9_Stack_Queue, Udemy_Strings, Big_O_Time_O(n)_Space_O(n)	1
0019	Remove Nth Node From End of List	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Two_Pointers, Linked_List, Algorithm_I_Day_5_Two_Pointers, Level_2_Day_3_Linked_List, Big_O_Time_O(L)_Space_O(L)	0
0017	Letter Combinations of a Phone Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Backtracking, Algorithm_II_Day_11_Recursion_Backtracking, Udemy_Backtracking/Recursion, Big_O_Time_O(4^n)_Space_O(n)	0
0015	3Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Sorting, Two_Pointers, Data_Structure_II_Day_1_Array, Algorithm_II_Day_3_Two_Pointers, Udemy_Two_Pointers, Big_O_Time_O(n*log(n))_Space_O(n^2)	29
0011	Container With Most Water	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Array, Greedy, Two_Pointers, Algorithm_II_Day_4_Two_Pointers, Big_O_Time_O(n)_Space_O(1)	3
0010	Regular Expression Matching	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_Interview_Questions, String, Dynamic_Programming, Recursion, Udemy_Dynamic_Programming, Big_O_Time_O(mn)_Space_O(mn)	1
0009	Palindrome Number	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Math, Udemy_Integers	5
0008	String to Integer (atoi)	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_Interview_Questions, String	1
0007	Reverse Integer	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_Interview_Questions, Math, Udemy_Integers	1
0006	Zigzag Conversion	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	String	2
0005	Longest Palindromic Substring	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Dynamic_Programming, Data_Structure_II_Day_9_String, Algorithm_II_Day_14_Dynamic_Programming, Dynamic_Programming_I_Day_17, Udemy_Strings, Big_O_Time_O(n)_Space_O(n)	7
0004	Median of Two Sorted Arrays	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Hard	Top_100_Liked_Questions, Top_Interview_Questions, Array, Binary_Search, Divide_and_Conquer, Big_O_Time_O(log(min(N,M)))_Space_O(1)	1
0003	Longest Substring Without Repeating Characters	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, String, Hash_Table, Sliding_Window, Algorithm_I_Day_6_Sliding_Window, Level_2_Day_14_Sliding_Window/Two_Pointer, Udemy_Strings, Big_O_Time_O(n)_Space_O(1)	2
0002	Add Two Numbers	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Medium	Top_100_Liked_Questions, Top_Interview_Questions, Math, Linked_List, Recursion, Data_Structure_II_Day_10_Linked_List, Programming_Skills_II_Day_15, Big_O_Time_O(max(N,M))_Space_O(max(N,M)), AI_can_be_used_to_solve_the_task	1
0001	Two Sum	Java Kotlin TypeScript Scala Ruby PHP C# Go Cpp Python Swift Elixir Rust Dart C	Easy	Top_100_Liked_Questions, Top_Interview_Questions, Array, Hash_Table, Data_Structure_I_Day_2_Array, Level_1_Day_13_Hashmap, Udemy_Arrays, Big_O_Time_O(n)_Space_O(n), AI_can_be_used_to_solve_the_task	2

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Data Structure II

Day 1 Array

Day 2 Array

Day 3 Array

Day 4 Array

Day 5 Array

Day 6 String

Day 7 String

Day 8 String

Day 9 String

Day 10 Linked List

Day 11 Linked List

Day 12 Linked List

Day 13 Linked List

Day 14 Stack Queue

Day 15 Tree

Day 16 Tree

Day 17 Tree

Day 18 Tree

Day 19 Graph

Day 20 Heap Priority Queue

Day 21 Heap Priority Queue

Algorithm I

Day 1 Binary Search

Day 2 Two Pointers

Day 3 Two Pointers

Day 4 Two Pointers

Day 5 Two Pointers

Day 6 Sliding Window

Day 7 Breadth First Search Depth First Search

Day 8 Breadth First Search Depth First Search

Day 9 Breadth First Search Depth First Search

Day 10 Recursion Backtracking

Day 11 Recursion Backtracking

Day 12 Dynamic Programming

Day 13 Bit Manipulation

Day 14 Bit Manipulation

Algorithm II

Day 1 Binary Search

Day 2 Binary Search

Day 3 Two Pointers

Day 4 Two Pointers

Day 5 Sliding Window

Day 6 Breadth First Search Depth First Search

Day 7 Breadth First Search Depth First Search

Day 8 Breadth First Search Depth First Search

Day 9 Recursion Backtracking

Day 10 Recursion Backtracking

Day 11 Recursion Backtracking

Day 12 Dynamic Programming

Day 13 Dynamic Programming

Day 14 Dynamic Programming

Day 15 Dynamic Programming

Day 16 Dynamic Programming

Day 17 Dynamic Programming

Day 18 Dynamic Programming

Day 19 Bit Manipulation

Day 20 Others

Day 21 Others

Binary Search I

Day 1

Day 2

Day 3

Day 4

Day 5

Day 6

Day 7

Day 8

Day 9

Day 10

Day 11

Day 12

Binary Search II

Day 1