LeetCodeAnimation/0344-Reverse-String/cpp-0344/main.cpp at master · Chris039/LeetCodeAnimation · GitHub

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/// Source : https://leetcode.com/problems/reverse-string/description/

/// Author : liuyubobobo

/// Time : 2018-06-04

#include <iostream>

using namespace std;

// 344. Reverse String

// https://leetcode.com/problems/reverse-string/description/

// Two Pointers

// 时间复杂度: O(n)

// 空间复杂度: O(1)

class Solution {

public:

string reverseString(string s) {

int i = 0, j = s.size() - 1;

while(i < j){

swap(s[i], s[j]);

i ++;

j --;

}

return s;

}

};

int main() {

cout << Solution().reverseString("hello") << endl;

return 0;

}

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