[Reverse String] Leetcode challenge - Reverse String #leetcode #javascript #codinginterview

reverse-string.js

var reverseString = function(s) {
    let left = 0; let right = s.length - 1;
    while (left < right) {
        let tmp = s[left];
        s[left++] = s[right];
        s[right--] = tmp;
    }
    return s;
};