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.

class Solution {
public:
    bool isAnagram(string s, string t) {
        int slength = s.size();
        int tlength = t.size();
        if (slength != tlength )//长度不相等，则一定为假
        return false;
        sort(s.begin(),s.end());//如果长度等，则把两个字符串排序，如果两个字符串的字母相同，则返回真，否则返回假
        sort(t.begin(),t.end());
        if (s == t)
        return true;
        else return false;
       
       
    }
};