You are given two strings s and t.
String t is generated by random shuffling string s and then add one more letter at a random position.
Return the letter that was added to t.
class Solution {
public char findTheDifference(String s, String t) {
int n = 0;
char[] sChar = s.toCharArray();
char[] tChar = t.toCharArray();
for (int i = 0;i < sChar.length;i++) {
n ^= sChar[i];
}
for (int i = 0;i < tChar.length;i++) {
n ^= tChar[i];
}
return (char)n;
}
}
