fork download
copy 
  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. 		Scanner s=new Scanner(System.in);
  13. 		int N=s.nextInt();
  14. 		int a[]=new int[N];
  15. 		for(int i=0;i<N;i++){
  16. 			a[i]=s.nextInt();
  17. 		}
  18. 		int k=s.nextInt();
  19. 		HashMap<Integer,Integer> arr=new HashMap<>();
  20. 		int si=0,ei=0,maxlen=0;
  21. 		while(ei<N){
  22. 				arr.put(a[ei],arr.getOrDefault(a[ei],0)+1);	
  23. 			while(arr.size()>k){
  24.  
  25. 				arr.put(a[si],arr.getOrDefault(a[si],0)-1);
  26. 				if(arr.get(a[si])==0)
  27. 				{
  28. 					arr.remove(a[si]);
  29. 				}
  30. 				si++;
  31. 			}
  32.  
  33.  
  34. 		maxlen=Math.max(maxlen,(ei-si)+1);
  35. 		ei++;
  36.  
  37. 		}
  38. 		System.out.println(maxlen);
  39.  
  40.  
  41. 	}
  42. }
Success #stdin #stdout 0.14s 56644KB
comments (?)
stdin
copy 
11
3 3 3 1 2 1 1 2 3 3 4
2
stdout
copy 
5
https://ideone.com/kQPco6
language:
Java (HotSpot 12)
created:
5 days ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!