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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13. 		Scanner sc = new Scanner(System.in);
  14. 		int n = sc.nextInt();
  15. 		int arr1[] = new int[n];
  16.  
  17. 		HashSet<Integer> hash = new HashSet<>();
  18.  
  19. 		for(int i=0;i<n;i++){
  20. 			int val = sc.nextInt();
  21. 			hash.add(val);
  22. 		}
  23.  
  24. 		int m = sc.nextInt();
  25. 		int arr2[] = new int[m];
  26.  
  27. 		for(int i=0;i<m;i++){
  28. 			int val = sc.nextInt();
  29. 			if(!hash.contains(val)){
  30. 				System.out.println("arr2 is not a subset of arr1");
  31. 				return;
  32. 			}
  33. 		}
  34.  
  35. 		System.out.println("arr2 is a subset of arr1");
  36.  
  37. 	}
  38. }
Success #stdin #stdout 0.12s 54512KB
comments (?)
stdin
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5 
2 4 7 1 5 
3
5 4 2
stdout
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arr2 is a subset of arr1
https://ideone.com/Y3MM4r
language:
Java (HotSpot 12)
created:
14 days ago
visibility:
public

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