题解 | #整型数组合并#

import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextInt()) {
            Set<Integer> set = new TreeSet<>();

            int len1 = in.nextInt();
            for (int i = 0; i < len1; i++) {
                set.add(in.nextInt());
            }

            int len2 = in.nextInt();
            for (int i = 0; i < len2; i++) {
                set.add(in.nextInt());
            }
            set.forEach(it->System.out.print(it));
        }
    }


}