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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 arr[]=new int[n];
  16. 		int k=sc.nextInt();
  17. 		for(int i=0;i<n;i++)
  18. 		arr[i]=sc.nextInt();
  19. 		int count=0;
  20.  
  21. 		Arrays.sort(arr);
  22.  
  23.  
  24. 		for(int i=0,j=0;j<n;j++)
  25. 		{
  26. 			int	diff=arr[j]-arr[i];
  27. 			while(diff>k)
  28. 			{
  29.  
  30. 				i++;
  31. 				diff=arr[j]-arr[i];
  32. 			}
  33. 			count+=(j-i+1);
  34. 		}
  35.  
  36. 		System.out.println(count-n);
  37.  
  38.  
  39. 	}
  40. }
Success #stdin #stdout 0.19s 56708KB
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3
https://ideone.com/WXiEOU
language:
Java (HotSpot 12)
created:
17 days ago
visibility:
public

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