LeetCode:Reverse String

Posted 2020-07-21 walker lee

Reverse String

Total Accepted: 32384 Total Submissions: 55169 Difficulty: Easy

Write a function that takes a string as input and returns the string reversed.

Example:
Given s = "hello", return "olleh".

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 (E) Reverse Vowels of a String

c++ code:

class Solution {
public:
    string reverseString(string s) {
        
        int len = s.length();
        int i=0,j=len-1;
        
        while(i<j) {
            s[i] ^= s[j] ^= s[i] ^= s[j];
            i++;
            j--;
        }
        return s;
    }
};