C++ 哈希

#include <bits/stdc++.h>

using namespace std;

int main(int argc, char* argv[])
{
    string str1, str2;
    int hashTable[300];
    while(cin >> str1)
    {
        cin >> str2;
        memset(hashTable, 0, 300 * sizeof(int));
        for(auto c : str1)
        {
            hashTable[c] = 1;
        }
        for(auto c : str2)
        {
            hashTable[c] = 0;
        }
        bool flag = true;
        for(auto c : str1)
        {
            if(hashTable[c])
            {
                flag = false;
                break;
            }
        }
        if(flag) cout << "true" << endl;
        else cout << "false" << endl;
    }

    return 0;
}