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package javaapplication66;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;

/**
 *
 * @author Usuario
 */
public class JavaApplication66 {

    public List<Integer> findDisappearedNumbers(int[] nums) {
        // write your code here

        HashSet<Integer> hash =
                new HashSet();

        //int min = Integer.MAX_VALUE;
        //int max = Integer.MIN_VALUE;
        for(int i =0; i<nums.length; i++) {
            hash.add(nums[i]);
           // min = Math.min(min, nums[i]);
            //max = Math.max(max, nums[i]);
        }

        ArrayList<Integer> lista =
                new ArrayList();


        for(int i = 1; i <= nums.length; i++) {
            if(!hash.contains(i)) {
                lista.add(i);
            }
            hash.add(i);
        }

        return lista;

    }
    public static void main(String[] args) {
        // TODO code application logic here
    }

}