389. Find the Difference

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.

public class Solution {
    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;
    }
}