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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.  
  14. 		Scanner sc=new Scanner(System.in);
  15. 		// size of 1st arr
  16. 		int n=sc.nextInt();
  17.  
  18. 		// size of 2nd arr
  19. 		int m=sc.nextInt();
  20.  
  21. 		int arr1[]=new int[n];
  22. 		int arr2[]=new int[m];
  23.  
  24. 		for(int i=0;i<n;i++)
  25. 		arr1[i]=sc.nextInt();
  26.  
  27. 		for(int i=0;i<m;i++)
  28. 		arr2[i]=sc.nextInt();
  29.  
  30. 		Set<Integer> s=new HashSet<>();
  31. 		for(int ele: arr1)
  32. 		s.add(ele);
  33.  
  34. 		boolean flag=true;
  35. 		for(int ele:arr2)
  36. 		{
  37. 			if(!s.contains(ele))
  38. 			{
  39. 				flag=false;
  40. 				break;
  41. 			}
  42. 		}
  43.  
  44. 		if(flag)
  45. 		System.out.println("Arr2 is a subset of arr1");
  46. 		else
  47. 		System.out.println("arr2 is not a subset of arr1");
  48.  
  49. 	}
  50. }
Success #stdin #stdout 0.17s 56608KB
comments (?)
stdin
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5
4
 1 2 3 5 8 
1 2 3 8
stdout
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Arr2 is a subset of arr1
https://ideone.com/O8Rp0h
language:
Java (HotSpot 12)
created:
4 days ago
visibility:
public

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