
Code:
/**
* @param {character[]} s
* @return {void} Do not return anything, modify s in-place instead.
*/
var reverseString = function(s=["h","e","l","l","o"]) {
let left = 0
let right = s.length - 1
while(left < right){
const temp = s[left]; // Store the left character
s[left] = s[right]; // Assign the right character to the left
s[right] = temp;
left++
right--
}
console.log(s)
};
reverseString()