Contain duplicate ll

class Solution {

    public boolean containsNearbyDuplicate(int[] nums, int k) {

        

for(int i =0; i<nums.length;i++){

  for(int j = i+1;j<= i + k && j < nums.length;j++){

      if(nums[i]==nums[j]){

                    return true;

                }

            }

        }

        return false;

    }

}