while (l < r) { // [chars[l], chars[r]] = [chars[r], chars[l]]; const temp = chars[l] chars[l] = chars[r] chars[r] = temp l++ r-- }
while (l < r) { // [chars[l], chars[r]] = [chars[r], chars[l]]; const temp = chars[l] chars[l] = chars[r] chars[r] = temp l++ r-- }