1234567891011
/** Do not return anything, modify s in-place instead. */export default function reverseString(s: string[]): void {    if (s.length < 2) return;    const half = Math.floor(s.length / 2);    for (let i = 0; i < half; i++) {        [s[i], s[s.length - i - 1]] = [s[s.length - i - 1], s[i]];    }}