题解 | 整型数组合并

import java.util.Scanner;
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
        String a = in.nextLine();
        String[] b = in.nextLine().split(" ");
        String c = in.nextLine();
        String[] d = in.nextLine().split(" ");
        List<Integer>  list = new ArrayList();
        for (int i = 0; i < b.length; i++) {
            if (list.contains(Integer.parseInt(b[i]))) {
                continue;
            }
            list.add(Integer.parseInt(b[i]));
        }

        for (int i = 0; i < d.length; i++) {
            if (list.contains(Integer.parseInt(d[i]))) {
                continue;
            }
            list.add(Integer.parseInt(d[i]));
        }

        Collections.sort(list);
        for (int i = 0; i < list.size(); i++) {
            System.out.print(list.get(i));
        }
    }
}