How to prompt user to input a number to get size of array. Then sort array using bubble sort method

Question

Haven't practiced Java in a long while so any help would be appreciated.

For the class project, we have to create a program that prompts the user to input a number and creates the size of an array. After input, we are to show the list of numbers before it is sorted and a list after it has been sorted using the bubble sort algorithm.

Here is what I have so far. I know I'm missing a chunk of code so that I can get the list to print both before and after sorting, but I'm lost.

import java.util.Scanner;
public class Part1BubbleSort  
{
public static void main(String[] args) 
{
    //int temp = 0;

    Scanner scan = new Scanner(System.in);
    int z = scan.nextInt();
    int [] array = new int[z];
    System.out.print("Please enter a number to create array."+"\n");
    z = scan.nextInt();

    //Bubble Sort
    for(int i = array.length-1; i>=0; i--)
    {
        for(int j=0; j<i; j++)
        {
            if(array[j] > array[j+1])
            {
                int temp = array[j];
                array[j] = array[j+1];
                array[j+1] = temp;
            }
        }
    }
}

Answer 1

You could do as follows:

import java.util.Arrays;
import java.util.Scanner;
import java.util.Random;
public class BubbleTest {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        System.out.println("Please enter a number to create array."+"\n");
        int z = scan.nextInt();
        int [] array = new int[z];
        // Randomly generating array elements

        for(int i =0; i<z; i++){
            array[i]=new Random().nextInt();
        }
      //  z = scan.nextInt();
        System.out.println("Unsorted:");
        System.out.println(Arrays.toString(array));


        //Bubble Sort
        for(int i = array.length-1; i>=0; i--)
        {
            for(int j=0; j<i; j++)
            {
                if(array[j] > array[j+1])
                {
                    int temp = array[j];
                    array[j] = array[j+1];
                    array[j+1] = temp;
                }
            }
        }

        System.out.println("sorted:");
        System.out.println(Arrays.toString(array));
    }

}