Creating Arrays

This assignment is designed to give you additional practice with creating arrays.

setup

• Put your code in a new empty Java file named "CreatingArrays.java", and make sure to name the class CreatingArrays.

  Then, begin with a structure similar to what's listed below.

import java.util.Arrays;

public class CreatingArrays
{
    public static void main( String[] args )
    {
        // part 1
        makeAndPrint();

        // part 2
        int[] a = makeArray();
        System.out.println("The returned array contains " + Arrays.toString(a));

        // part 3
        a = makeRandomOdds(8);
        System.out.println("An array with 8 odd numbers " + Arrays.toString(a));
    }

    public static void makeAndPrint()
    {
    }

    public static int[] makeArray()
    {
        return null;
    }

    public static int[] makeRandomOdds( int n )
    {
        return null;
    }
}

part 1 - making and printing in one method

• Make a method in which you create a new array. Fill the array with ten random numbers, and then print out that array using Arrays.toString().

The array I just made contains [31, 41, 59, 26, 53, 58, 97, 93, 23, 84]

part 2 - making in one method, printing in another

• Make a method in which you create a new array. Fill the array with ten random numbers, and then return it. Display that array in main().

The returned array contains [13, 14, 95, 62, 35, 85, 79, 39, 32, 48]

part 3 - making in one method with constraints

• Make a method in which you create a new array. The main() will pass in the size of the array to create. In a loop, generate some random numbers. If the number is odd, add it to the array. When the array is full, stop looping and return the array.

  Display that array in main().

An array with 8 odd numbers [13, 95, 35, 85, 79, 39, 33, 59]