[LeetCode&Python] Problem 389. Find the Difference
阿新 • • 發佈:2018-11-02
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