ReverseString

Published at 2022-02-15

/**
 * @param {character[]} s
 * @return {void} Do not return anything, modify s in-place instead.
 */
var reverseString = function (s) {
  let l = 0,
    r = s.length - 1;
  while (l < r) {
    const temp = s[l];
    s[l] = s[r];
    s[r] = temp;
    l++;
    r--;
  }
};