REVERSE A STRING LEETCODE SOLUTION 2 c++

DESCRIPTION:
Write a function that reverses a string. The input string is given as an array of characters s.

You must do this by modifying the input array in-place with O(1) extra memory.

Example 1:

Input: s = ["h","e","l","l","o"]
Output: ["o","l","l","e","h"]
Example 2:

Input: s = ["H","a","n","n","a","h"]
Output: ["h","a","n","n","a","H"]

Constraints:

1 <= s.length <= 105
s[i] is a printable ascii character.

1.STRING GIVEN EG: RUPA
2.CHAR ARRAY GIVEN EG: ["R","U","P","A"]

1.STRING GIVEN EG: RUPA

SOLUTION C++:

#include <bits/stdc++.h> 
using namespace std; 

void reverse(string s){ 
   for(int i=s.length()-1; i>=0; i--) 
      cout<<s[i];  
} 

int main(){ 
    string s = "Rupa"; 
    reverse(s); 
    return 0; 
}

2.2.CHAR ARRAY GIVEN EG: "R","U","P","A"

SOLUTION C++;

class Solution {
public:
    void reverseString(vector<char>& s) {
        int n=s.size();
        int l=0;
        int r=n-1;
        while(l<=r){
            swap(s[l],s[r]);
            l++;
            r--;
        }


    }
};