JavaProgramming/HackerRank/FiftyFive.java at patch-1 · subham500071430/JavaProgramming · GitHub

41 lines (33 loc) · 1015 Bytes

package HackerRank;

import java.util.*;

class Student{}

class Rockstar{ }

class Hacker{}

public class FiftyFive {

static String count(ArrayList mylist){

int a = 0,b = 0,c = 0;

for(int i = 0; i < mylist.size(); i++){

Object element=mylist.get(i);

if (element instanceof Student)

a++;

if (element instanceof Rockstar)

b++;

if (element instanceof Hacker)

c++;

}

String ret = Integer.toString(a)+" "+ Integer.toString(b)+" "+ Integer.toString(c);

return ret;

}

public static void main(String []args){

ArrayList mylist = new ArrayList();

Scanner sc = new Scanner(System.in);

int t = sc.nextInt();

for(int i=0; i<t; i++){

String s=sc.next();

if(s.equals("Student"))mylist.add(new Student());

if(s.equals("Rockstar"))mylist.add(new Rockstar());

if(s.equals("Hacker"))mylist.add(new Hacker());

}

System.out.println(count(mylist));

}

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