217. Contains Duplicate

class Solution {
    public boolean containsDuplicate(int[] nums) {
        HashSet<Integer> set = new HashSet<>();
        for(int i = 0 ; i < nums.length ; i++){
            if(!set.contains(nums[i])){
                set.add(nums[i]);
            }else{
                return true;
            }
                    
        }
        return false;
        
    }
}