Untitled

void frequencyCount(vector<int>& arr,int n, int p)
    { 
        // code here
        unordered_map<int,int> map;
        
        for (int i=0; i<n; i++) map[arr[i]]++;
        
        for (int i=1; i<=p; i++){
            if (map.count(i)>0) cout << map[i] << " ";
            else cout << 0 << " ";
        }
    }