Question

Write a Java program named, MultiTable, (MultiTable.java), with the following tasks:

• Prompt user to input the maximum number (as integer)
• Store a multiplication table for all combinations (with some specific eliminations) of value 0 through the maximum number (being entered) into a 2-D array
• Write a method named printTable to print out the MulitTable, with the following header,
  • public static void printTable(int[][] multitable)
• In printTable(), when the value of the MultiTable is an odd number, print out Z
• Must use System.out.printf() for all output functions
• Sample output:

Please enter positive max. number:5
    0    0    0    0    0    0
    0    Z    2    Z    4    Z
    0    2    4    6    8   10
    0    Z    6    Z   12    Z
    0    4    8   12   16   20
    0    Z   10    Z   20    Z

• Sample output:

Please enter positive max. number:11
    0    0    0    0    0    0    0    0    0    0    0    0
    0    Z    2    Z    4    Z    6    Z    8    Z   10    Z
    0    2    4    6    8   10   12   14   16   18   20   22
    0    Z    6    Z   12    Z   18    Z   24    Z   30    Z
    0    4    8   12   16   20   24   28   32   36   40   44
    0    Z   10    Z   20    Z   30    Z   40    Z   50    Z
    0    6   12   18   24   30   36   42   48   54   60   66
    0    Z   14    Z   28    Z   42    Z   56    Z   70    Z
    0    8   16   24   32   40   48   56   64   72   80   88
    0    Z   18    Z   36    Z   54    Z   72    Z   90    Z
    0   10   20   30   40   50   60   70   80   90  100  110
    0    Z   22    Z   44    Z   66    Z   88    Z  110    Z

Answer 1

Thanks for the question. Below is the code you will be needing. Let me know if you have any doubts or if you need anything to change. 

If you are satisfied with the solution, please leave a +ve feedback : ) Let me know for any help with any other questions.

Thank You!
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import java.util.Scanner;

public class MultiTable {

    public static void printTable(int[][] multitable) {

        int size = multitable.length;

        for (int row = 0; row < size; row++) {
            for (int col = 0; col < size; col++) {

                if (multitable[row][col] % 2 == 1) {
                    System.out.printf("%5c", 'Z');
                } else {
                    System.out.printf("%5d", multitable[row][col]);
                }
            }
            System.out.println();
        }


    }

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        System.out.print("Please enter positive max. number: ");
        int size = scanner.nextInt();

        if (size <= 0) {
            System.out.println("Error: input number cannot be zero or negative.");
            return;
        }

        size+=1;

        int[][] multiTable = new int[size][size];

        for (int row = 0; row < size; row++) {
            for (int col = 0; col < size; col++) {
                multiTable[row][col] = row * col;
            }
        }


        printTable(multiTable);

    }
}

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