LeetCode Valid Anagram

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.

Follow up:
What if the inputs contain unicode characters? How would you adapt your solution to such case?

这个题目很简单，只要两个字符串中相同的字符的个数相同，就返回true，否则返回false

class Solution {
public:
    bool isAnagram(string s, string t) {
        map<char,int> ms,mt;
        for(auto e:s)
        {
            ms[e]+=1;
        }
        for(auto e:t)
        {
            mt[e]+=1;
        }
        return ms==mt;
    }
};