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.
from collections import Counter
class Solution(object):
def findTheDifference(self, s, t):
"""
:type s: str
:type t: str
:rtype: str
"""
cs=Counter(s)
ct=Counter(t) for k in ct:
if cs[k]!=ct[k]:
return k