leetcode之389. Find the Difference（C++解法）

原题：

Given two strings s and t which consist of only lowercase letters.

String t is generated by random shuffling string s and then add one more letter at a random position.

Find the letter that was added in t.

Example:

Input:

s = “abcd”

t = “abcde”

Output:

e

Explanation:

‘e’ is the letter that was added.

[b]**********************************[/b]我是分割线[b]*******************************[/b]

class Solution {

public:

char findTheDifference(string s, string t) {

int couns[26]={0};

int counts[26]={0};

char resu;

for(int i=0; i