NYOJ题目839合并

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AC代码：

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        
        
        Scanner sc=new Scanner(System.in);
        
        int times=sc.nextInt();
        while(times-->0){
            
            int n=sc.nextInt();
            int book[]=new int[100];
            
            for(int i=0;i<n*2;i++){
                book[sc.nextInt()]=1;
            }

            for(int i=0;i<book.length;i++){
                if(book[i]==1) System.out.print(i+" ");
            }
            System.out.println();
            
        }
        
    }
    
}

 

题目来源： http://acm.nyist.net/JudgeOnline/problem.php?pid=839