/** * @param {character[]} s * @return {void} Do not return anything, modify s in-place instead. */ var reverseString = function (s) { let l = 0; let r = s.length - 1; while (l < r) { [s[l], s[r]] = [s[r], s[l]]; l++; r--; } return s; };
原文：https://www.cnblogs.com/lanpang9661/p/12453709.html