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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.
使用 字符异或即可
class Solution {public: char findTheDifference(string s, string t) { char c = 0; for(int i = 0;i < s.length();++i) { c ^= s[i]; } for(int j = 0;j < t.length();++j) { c ^= t[j]; } return c; }};
Leetcode 389. Find the Difference
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