Find the Difference

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

给出两个字符串，s和t，都是只有小写字母组成的。

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

字符串t是由字符串s其中在随机的位置添加一个字符组成的。

Find the letter that was added in t.

找出在t中增加的字符

Example:

Input:s = "abcd"t = "abcde"Output:eExplanation:‘e‘ is the letter that was added.

public char findTheDifference(String s, String t) {    char c = 0;    for (int i = 0; i < s.length(); ++i) {        c ^= s.charAt(i);    }    for (int i = 0; i < t.length(); ++i) {        c ^= t.charAt(i);    }    return c;}

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