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Reverse String

Problem statement​

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.

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:

My solution​

/**
 * @param {character[]} s
 * @return {void} Do not return anything, modify s in-place instead.
 */
var reverseString = function(s) {
    for (let i = 0; i < Math.floor(s.length / 2); i++) {
        const j = s.length - 1 - i;
        
        [s[j], s[i]] = [s[i], s[j]]
    }
};