[编程题] 消除重复元素代码

import java.util.*;
 
public class Main {
    public static void main(String[] args) {
         
        Scanner in = new Scanner(System.in);
        while(in.hasNext()) {
            int n = in.nextInt();
            int[] nums = new int[n];
            for(int i=0;i<n;i++) {
                nums[i] = in.nextInt();
            }
            int[] res = solve(nums);
            for(int i=0;i<res.length-1;i++) {
                System.out.print(res[i] + " ");
            }
            System.out.print(res[res.length-1]);
        }
         
    }
     
    private static int[] solve(int[] nums) {
         
        Set<Integer> set = new LinkedHashSet<>();
         
        for(int i=nums.length-1;i>=0;i--) {
            set.add(nums[i]);
        }
         
        int[] res = new int[set.size()];
         
        Iterator<Integer> it = set.iterator();
         
        int i = res.length-1;
        while(it.hasNext()) {
            res[i] = it.next();
            i--;
        }
        return res;
    }
}