题目：
Given two strings s and t, write a function to determine if t is an anagram of s.
For example,
s = "anagram", t = "nagaram", return true.
s = "rat", t = "car", return false.
Note:
You may assume the string contains only lowercase alphabets.
还是比较简单的。
class Solution { public: bool isAnagram(string s, string t) { unordered_map<char, int> dicts; if (s.size() != t.size()) return false; for (int i = 0; i < s.size(); ++i){ dicts[s[i]]++; } for (int i = 0; i < t.size(); ++i){ if (dicts.find(t[i]) == dicts.end() || dicts[t[i]] == 0) return false; else dicts[t[i]]--; } return true; } };
【LeetCode】242. Valid Anagram 解题小结
原文：http://www.cnblogs.com/Doctengineer/p/5825904.html