题解 | #整型数组合并#

import java.util.*;
import java.util.stream.*;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        while (sc.hasNextInt()) {
            int a = Integer.parseInt(sc.nextLine());
            String str1 = sc.nextLine();
            int b = Integer.parseInt(sc.nextLine());
            String str2 = sc.nextLine();
            // 将两个数组元素合并为一个set集合，set天然去重
            String[] split1 = str1.split(" ");
            Set<Integer> set = new HashSet<>();
            for (String s : split1) {
                set.add(Integer.parseInt(s));
            }
            String[] split2 = str2.split(" ");
            for (String s : split2) {
                set.add(Integer.parseInt(s));
            }
            // 利用stream流排序
            List<Integer> list = set.stream().sorted().collect(Collectors.toList());
            list.forEach(s -> System.out.print(s));
        }
    }
}