Find the Difference
You are given two strings s and t.
String t is generated by randomly shuffling string s and then adding one more letter at a random position.
Return the letter that was added to t.
Example 1
Input
s = "abcd", t = "abcde"Output
"e"'e' is the letter that was added.
Example 2
Input
s = "", t = "y"Output
"y"'y' is the only letter in
t, so it is the letter that was added.Constraints
- 0 <= s.length <= 1000
- t.length == s.length + 1
- s and t consist of lowercase English letters.