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package org.example;
public class Main {
public static char findTheDifference(String s, String t) {
int num = 0;
for(int cs : s.toCharArray()) num -= cs;
for(int ct : t.toCharArray()) num += ct;
return (char) (num);
}
public static void main(String[] args)
{
System.out.println(findTheDifference("abcd" , "abecd"));
}
}class Solution {
public char findTheDifference(String s, String t) {
char c = 0;
for(char cs : s.toCharArray()) c ^= cs;
for(char ct : t.toCharArray()) c ^= ct;
return c;
}
}