reverse_a_string.jav

class Solution {
    public void reverseString(char[] s) {
        
        int left=0;
        int right=s.length-1;
        while(left<right)
        {
            char temp=s[right];
            s[right]=s[left];
            s[left]=temp;
            left++;
            right--;
        }
    }
    
}