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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.  
  17. 		for(int i=0; i<n; i++){
  18. 			int val = sc.nextInt();
  19. 			arr[i]=val;
  20. 		}
  21. 		int k = sc.nextInt();
  22. 		boolean result=false;
  23.  
  24. 		HashMap<Integer,Integer> hmap = new HashMap<>();
  25. 		for(int i=0; i<n; i++){
  26. 			if(!hmap.containsKey(arr[i])){
  27. 				hmap.put(arr[i],i);
  28. 			}
  29. 			else{
  30. 				if(i-hmap.get(arr[i])<=k){
  31. 					result=true;
  32. 				}
  33. 				else{
  34. 					hmap.put(arr[i],i);
  35. 				}
  36. 			}
  37.  
  38. 		}
  39.  
  40. 		System.out.println(result);
  41. 	}
  42. }
Success #stdin #stdout 0.13s 56656KB
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8
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false
https://ideone.com/nCuT0n
language:
Java (HotSpot 12)
created:
13 days ago
visibility:
public

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