我该如何修复我的代码？ 2D阵列

Question

I want to create a 2D array using the user's input and the creating random numbers in the second line. Eg:

Output should be:

If the user enters "7" then:

1 2 3 4 5 6 7 (User's input)

0 2 4 8 9 8 5 (Random numbers)

but instead I only get one random number.

My code is working but I can't see to create the array correctly. My code:

import java.util.Scanner;


public class Main {


    public static void main(String[] args) {



        Scanner input = new Scanner(System.in);
        System.out.print("Enter number of exits: ");
        int n = input.nextInt();

        int [][] A = new int[2][n];
        for(int i=0; i<A.length; i++){
            for (int j = 0; j<n; j++) {
                  A[i][j] = (int) (Math.random()*10);
            }
        }

        System.out.println(A[1][n-1]);
        System.out.print("Distance between exit i and exit j is: " + distance());
    }



    public static int distance(){
        Scanner input = new Scanner(System.in);

        System.out.print("Please enter exit i: ");
        int i = input.nextInt();
        System.out.print("Please enter exit j: ");
        int j = input.nextInt();
        return i + j;
    }
}

How can I fix it?

Answer 1

Would this help?

    int n = input.nextInt();
    Random rand = new Random();
    int [][] A = new int[2][n];
    for (int i = 0; i<n; i++) {
       A[0][i] = i+1;
       A[1][i] = rand.nextInt(10);
    }

Answer 2

Am not too certain about what you mean by:
1 2 3 4 5 6 7 (User's input)
0 2 4 8 9 8 5 (Random numbers)
Do you want users to manually enter "1 2 3 4 5 6 7"?

Eitherway, here's something to help with the printing aspect:

    public static void main(String[] args) {
    // TODO code application logic here
     Scanner input = new Scanner(System.in);
    System.out.print("Enter number of exits: ");
    int n = input.nextInt();

    int [][] A = new int[2][n];
    for(int i=0; i<A.length; i++){
        for (int j = 0; j<n; j++) {
              A[i][j] = (int) (Math.random()*10);
        }
    }

    for(int[] b: A)
    {
        for(int k: b)
        {
            System.out.print(k + " ");       
        }
        System.out.println();
    }
    System.out.print("Distance between exit i and exit j is: " + distance());
}