389_Find_the_Difference

Leetcode 389: Find the Difference
Detailed video explanation: https://youtu.be/sRwElQ_TOr8
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C++:
----
class Solution {
public:
    char findTheDifference(string s, string t) {
        char c = 0;
        for(char cs: s) c ^= cs;
        for(char ct: t) c ^= ct;
        return c;
    }
};


Java:
-----
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;
    }
}


Python3:
--------
class Solution:
    def findTheDifference(self, s: str, t: str) -> str:
        c = 0
        for cs in s: c ^= ord(cs)
        for ct in t: c ^= ord(ct)
        return chr(c)