Java HashMap easy solution

  • 0
    public class Solution {
        public boolean containsNearbyDuplicate(int[] nums, int k) {
            Map<Integer, Integer> map = new HashMap<>();
            for(int i=0; i< nums.length;i++) {
                if(map.containsKey(nums[i])){ if (Math.abs(i-map.get(nums[i]))<=k) return true;}
                map.put(nums[i], i);
            return false;

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