Leetcode 389. Find the Difference

Seawolf

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.

1. class Solution:
   
2.     def findTheDifference(self, s: str, t: str) -> str:
   
3.         c = ord(t[len(t) - 1])
   
4.         for i in range(len(s)):
   
5.             c ^= ord(s[i])
   
6.             c ^= ord(t[i])
   
7.         return chr(c)

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