switch分行输出，暴力解

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int[] arr = new int[4];
        while(sc.hasNextInt()){
            arr[0] = sc.nextInt();
            arr[1] = sc.nextInt();
            arr[2] = sc.nextInt();
            arr[3] = sc.nextInt();

            for(int i = 0;i < 4;i++){
                if(arr[i] == 1 || arr[i] == 4){
                    System.out.print("   ");
                }else{
                    System.out.print(" _ ");
                }
            }
            System.out.println();

            for(int i = 0;i < 4;i++){
                switch (arr[i]){
                    case 1:
                    case 7:
                        System.out.print("  |");
                        break;
                    case 2:
                    case 3:
                        System.out.print(" _|");
                        break;
                    case 4:
                    case 8:
                    case 9:
                        System.out.print("|_|");
                        break;
                    case 5:
                    case 6:
                        System.out.print("|_ ");
                        break;
                    case 0:
                        System.out.print("| |");
                        break;

                }
            }
            System.out.println();

            for(int i = 0;i < 4;i++){
                switch (arr[i]){
                    case 1:
                    case 4:
                    case 7:
                        System.out.print("  |");
                        break;
                    case 2:
                        System.out.print("|_ ");
                        break;
                    case 3:
                    case 5:
                    case 9:
                        System.out.print(" _|");
                        break;
                    case 6:
                    case 8:
                    case 0:
                        System.out.print("|_|");
                        break;

                }
            }
            System.out.println();
        }

    }
}