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Java Instanceof keyword
Java Instanceof keyword
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import java.io.; import java.util.;
public class Solution {
}
import java.io.; import java.util.;
class Student{} class Rockstar{} class Hacker{}
public class Solution {
}
import java.util.*;
class Student{} class Rockstar{ } class Hacker{}
public class InstanceOFTutorial{
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
import java.util.*;
class Student{} class Rockstar{ } class Hacker{}
public class InstanceOFTutorial{
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