Write a function that reverses a string. The input string is given as an array of characters s.
You must do this by modifying the input array in-place with O(1) extra memory.
Examples
Example 1
Input: s = ["h","e","l","l","o"]
Output: ["o","l","l","e","h"]
Example 2
Input: s = ["H","a","n","n","a","h"]
Output: ["h","a","n","n","a","H"]
Constraints
1 <= s.length <= 105
s[i] is a printable ascii character.
344. Reverse String
Easy
10 Points
Two Pointers
String
Write a function that reverses a string. The input string is given as an array of characters s.
You must do this by modifying the input array in-place with O(1) extra memory.
Examples
Example 1
Input: s = ["h","e","l","l","o"]
Output: ["o","l","l","e","h"]
Example 2
Input: s = ["H","a","n","n","a","h"]
Output: ["h","a","n","n","a","H"]