Given an input string s, reverse the order of the words.
A word is defined as a sequence of non-space characters. The words in s will be separated by at least one space.
Return a string of the words in reverse order concatenated by a single space.
Note that s may contain leading or trailing spaces or multiple spaces between two words. The returned string should only have a single space separating the words. Do not include any extra spaces.
Example 1:
Input: s = "the sky is blue" Output: "blue is sky the" Example 2:
Input: s = " hello world " Output: "world hello" Explanation: Your reversed string should not contain leading or trailing spaces. Example 3:
Input: s = "a good example" Output: "example good a" Explanation: You need to reduce multiple spaces between two words to a single space in the reversed string. Example 4:
Input: s = " Bob Loves Alice " Output: "Alice Loves Bob"
Constraints:
1 <= s.length <= 104 s contains English letters (upper-case and lower-case), digits, and spaces ' '. There is at least one word in
Link to Leetcode Question: https://leetcode.com/problems/reverse-words-in-a-string/