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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. 		int nums [] = {1,2,3,2};
  13. 		int k = 2;
  14. 		System.out.println(isElepresentWithinK(nums, k));
  15.  
  16. 	}
  17. 	static boolean isElepresentWithinK(int nums[], int k){
  18. 		Map<Integer, Integer> map = new HashMap<>();
  19. 		for(int i =0; i< nums.length; i++){
  20. 			if(map.containsKey(nums[i])){
  21. 				if(Math.abs(map.get(nums[i])-i) <= k) {return true;}
  22. 				else map.put(nums[i], i);
  23. 			}else{
  24. 				map.put(nums[i], i);
  25. 			}
  26.  
  27. 		}
  28. 		return false;
  29.  
  30. 	}
  31. }
Success #stdin #stdout 0.1s 54728KB
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stdin
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Standard input is empty
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true
https://ideone.com/UjxtNe
language:
Java (HotSpot 12)
created:
1 day ago
visibility:
public

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