【leetcode389】389. Find the Difference

异或 找不同 —。—

 public class Solution {
     public char findTheDifference(String s, String t) {
         char temp = 0x00;
         for(int i = 0;i < s.length();i++){
             temp =(char) (temp ^ s.charAt(i));
         }
         for(int i = 0;i < t.length();i++){
             temp =(char) (temp ^ t.charAt(i));
         }
         return temp;
     }
 }