Lib/mapの全探索

code:cpp

for (auto iter = mp.begin(); iter != mp.end(); iter++) {

// first: key, second: value

cout << "key = " << iter->first << "\n";

cout << "value = " << iter->second << "\n";

}

C++17以降

code:cpp

map<int,int> mp;

for(auto a,b : mp){

//key = a,b = val

}

たぶんsetも同じ要領でいける　と思う