Data Structures And Algorithms For Software Developers

General Info

Solutions to the most commonly asked interview problems for aspiring software developers. Questions are picked from a mix of platforms like Leetcode, Hackerrank, GFG etc.

Languages

The repository contains programs written in:

C++
C
Java

Environment & Tools

VS Code
Leetcode / Hackerrank / Geeks For Geeks / InterviewBit / Codechef

License

BSD 2-Clause "Simplified" License

Maintainer : Dishan Purkayastha

Name		Name	Last commit message	Last commit date
Latest commit History 326 Commits
0-1 Knapsack - Memoization.cpp		0-1 Knapsack - Memoization.cpp
0-1 Knapsack - TopDown.cpp		0-1 Knapsack - TopDown.cpp
2 sum - BST.cpp		2 sum - BST.cpp
2 sum using Hash Table.cpp		2 sum using Hash Table.cpp
2-Strings.cpp		2-Strings.cpp
2_Sum_Target.cpp		2_Sum_Target.cpp
2_sum.cpp		2_sum.cpp
3Sum Closest.cpp		3Sum Closest.cpp
Add Digits.cpp		Add Digits.cpp
Add Two Numbers.cpp		Add Two Numbers.cpp
All Numbers Disappeared in an Array.cpp		All Numbers Disappeared in an Array.cpp
Anagrams.cpp		Anagrams.cpp
Apples & Oranges.cpp		Apples & Oranges.cpp
Area Using Abstract Class.java		Area Using Abstract Class.java
Array Manipulation.cpp		Array Manipulation.cpp
Array Queries.cpp		Array Queries.cpp
BST_Insertion.cpp		BST_Insertion.cpp
BST_Mode.cpp		BST_Mode.cpp
Balanced Tree.cpp		Balanced Tree.cpp
Bank Interest Rates Using Interface.java		Bank Interest Rates Using Interface.java
Best Time to Buy and Sell Stock.cpp		Best Time to Buy and Sell Stock.cpp
Binary Search : PeakElement.cpp		Binary Search : PeakElement.cpp
Binary Search Tree Implementation.c		Binary Search Tree Implementation.c
Binary Search Tree from Preorder Traversal.cpp		Binary Search Tree from Preorder Traversal.cpp
Binary Search.cpp		Binary Search.cpp
Binary Tree Tilt.cpp		Binary Tree Tilt.cpp
Binary Tree To DLL.cpp		Binary Tree To DLL.cpp
Binary Tree Zigzag Level Order Traversal.cpp		Binary Tree Zigzag Level Order Traversal.cpp
Breadth First Traversal.cpp		Breadth First Traversal.cpp
Characters By Frequency.cpp		Characters By Frequency.cpp
Check Capital.cpp		Check Capital.cpp
Check Completeness of a Binary Tree..cpp		Check Completeness of a Binary Tree..cpp
Check if the Sentence Is Pangram.cpp		Check if the Sentence Is Pangram.cpp
CheckBalanced.cpp		CheckBalanced.cpp
Coin Change - Minimum Coins.cpp		Coin Change - Minimum Coins.cpp
Coin Change - Total No Of Ways.cpp		Coin Change - Total No Of Ways.cpp
Compare two linked lists.cpp		Compare two linked lists.cpp
Construct the Rectangle.cpp		Construct the Rectangle.cpp
Contains Duplicates II.cpp		Contains Duplicates II.cpp
Convert Binary Number in a Linked List to Integer.cpp		Convert Binary Number in a Linked List to Integer.cpp
CostToBuyNcandies.cpp		CostToBuyNcandies.cpp
Count Negative Numbers in a Sorted Matrix.cpp		Count Negative Numbers in a Sorted Matrix.cpp
Count leaf nodes in tree.java		Count leaf nodes in tree.java
Count primes in given range.cpp		Count primes in given range.cpp
Cousins in Binary Tree.cpp		Cousins in Binary Tree.cpp
Custom Sort String.cpp		Custom Sort String.cpp
DFS-Traversal.cpp		DFS-Traversal.cpp
DP: Shortest Common Supersequence.cpp		DP: Shortest Common Supersequence.cpp
Decimal To Binary.c		Decimal To Binary.c
DeleteWithoutHeadPointer.cpp		DeleteWithoutHeadPointer.cpp
Detect cycle in an undirected graph.cpp		Detect cycle in an undirected graph.cpp
Determine Whether Matrix Can Be Obtained By Rotation.cpp		Determine Whether Matrix Can Be Obtained By Rotation.cpp
Diagonal Difference - O(n) .cpp		Diagonal Difference - O(n) .cpp
Diagonal Difference.cpp		Diagonal Difference.cpp
Diameter Of Binary Tree .cpp		Diameter Of Binary Tree .cpp
Diameter Of Binary Tree.cpp		Diameter Of Binary Tree.cpp
Dijkstra's Algorithm.cpp		Dijkstra's Algorithm.cpp
Double Linked List Implementation.c		Double Linked List Implementation.c
Doubling The value.cpp		Doubling The value.cpp
Facing the sun.cpp		Facing the sun.cpp
Factorial.cpp		Factorial.cpp
Fibonacci.cpp		Fibonacci.cpp
Find All Duplicates in an Array.cpp		Find All Duplicates in an Array.cpp
Find Bottom Left Tree Value.cpp		Find Bottom Left Tree Value.cpp
Find Largest Value in Each Tree Row.cpp		Find Largest Value in Each Tree Row.cpp
Find Pivot Index.cpp		Find Pivot Index.cpp
Find Smallest Letter Greater Than Target.cpp		Find Smallest Letter Greater Than Target.cpp
Find the Difference.cpp		Find the Difference.cpp
Find-k-closest-elements.cpp		Find-k-closest-elements.cpp
First Negative Number in every Window of Size K.cpp		First Negative Number in every Window of Size K.cpp
First Repeating number.cpp		First Repeating number.cpp
First Unique Character.cpp		First Unique Character.cpp
First negative integer in every window of size k.cpp		First negative integer in every window of size k.cpp
FizzBuzz.cpp		FizzBuzz.cpp
Flatten Binary Tree to Linked List.cpp		Flatten Binary Tree to Linked List.cpp
Flatten Linked List.cpp		Flatten Linked List.cpp
Floor Of Array.cpp		Floor Of Array.cpp
Generic Array.cpp		Generic Array.cpp
Good Weather.cpp		Good Weather.cpp
Grading Students.cpp		Grading Students.cpp
Graph BFS.cpp		Graph BFS.cpp
Greedy_SOLN_jobSequencing.cpp		Greedy_SOLN_jobSequencing.cpp
Group Anagrams.cpp		Group Anagrams.cpp
Handling CLI Exceptions.java		Handling CLI Exceptions.java
Handling Multiple Exceptions.java		Handling Multiple Exceptions.java
Happy Number.cpp		Happy Number.cpp
Heap Sort.cpp		Heap Sort.cpp
Histogram with largst rectangle.cpp		Histogram with largst rectangle.cpp
House Robber.cpp		House Robber.cpp
Index of first 1 in a sorted array of 0s and 1s.cpp		Index of first 1 in a sorted array of 0s and 1s.cpp
Inorder Traversal Of Tree (Recursive).cpp		Inorder Traversal Of Tree (Recursive).cpp
Inorder predecessor and successor for a given key in BST.cpp		Inorder predecessor and successor for a given key in BST.cpp
Intersection Of 2 Arrays.cpp		Intersection Of 2 Arrays.cpp
Intersection of Two Linked Lists.cpp		Intersection of Two Linked Lists.cpp
IntersectionOfArrays.cpp		IntersectionOfArrays.cpp
Is Subsequence.cpp		Is Subsequence.cpp
Isogram string.cpp		Isogram string.cpp
K Closest Points to Origin.cpp		K Closest Points to Origin.cpp
K closest points.cpp		K closest points.cpp
K largest elements.cpp		K largest elements.cpp

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