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.
# -*- coding:utf-8 -*-
__author__ = 'yangxin_ryan'
"""
Solotions:
这里使用hash算法,
利用标记数据差寻找对应新增的数据。
"""
class FindTheDifference(object):
def findTheDifference(self, s, t)