leetcode

Leetcode - Reverse String Solution

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Leetcode - Reverse String Solution

Write a function that reverses a string. The input string is given as an array of characters s.

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:

Follow up: Do not allocate extra space for another array. You must do this by modifying the input array in-place with O(1) extra memory.

Solution in python

class Solution:
    def reverseString(self, s: List[str]) -> None:
        s.reverse()
        """
        Do not return anything, modify s in-place instead.
        """

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