力扣242

class Solution {
public:
    bool isAnagram(string s, string t) {
        int s1 = 0;
        int t1 = 0;
        for (char ss : s) {
            s1 += ss;
        }
        for (char tt : t) {
            t1 += tt;
        }
        if (s1 == t1) {
            sort(s.begin(), s.end());
            sort(t.begin(), t.end());
            for (int i = 0; i < s.size(); i++) {
                if (s[i] != t[i]) {
                    return false;
                }
            }
            return true;
        } else {
            return false;
        }
    }
};

class Solution {
public:
    bool isAnagram(string s, string t) {
        if (s.length() != t.length()) {
            return false;
        }
        vector<int> table(26, 0);
        for (auto& ch: s) {
            table[ch - 'a']++;
        }
        for (auto& ch: t) {
            table[ch - 'a']--;
            if (table[ch - 'a'] < 0) {
                return false;
            }
        }
        return true;
    }
};