NYOJ题目839合并

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AC代码：

 1 import java.util.Scanner;
 2
 3 public class Main {
 4
 5     public static void main(String[] args) {
 6
 7
 8         Scanner sc=new Scanner(System.in);
 9
10         int times=sc.nextInt();
11         while(times-->0){
12
13             int n=sc.nextInt();
14             int book[]=new int[100];
15
16             for(int i=0;i<n*2;i++){
17                 book[sc.nextInt()]=1;
18             }
19
20             for(int i=0;i<book.length;i++){
21                 if(book[i]==1) System.out.print(i+" ");
22             }
23             System.out.println();
24
25         }
26
27     }
28
29 }

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