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LeetCode 389. Find the Difference
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:eExplanation:‘e‘ is the letter that was added.
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题目：给你两个字符串都由小写字母组成，t是由s打乱然后再加上一个在随机位置的字母，找到这个添加到t的字母
class Solution {public: char findTheDifference(string s, string t) { map<char, int> map; for (auto &e : t) { ++map[e]; } for (auto &e : s) { --map[e]; } for(auto &e:map) { if(e.second==1)return e.first; } return 0; }};
LeetCode 389. Find the Difference
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