Question

Write a program which:

Prints out the Multiplication Table for a range of numbers (positive integers).

Prompts the user for a starting number: say 'x'

Prompts the user for an ending number: say 'y'

Prints out the multiplication table of 'x' up to the number 'y'

Sample outputs include:

  

SPECIFIC REQUIREMENTS

You must use the following method to load the array: public static void loadArray(int table[ ][ ], int x, int y)

You must use the following method to display the array: public static void printMultiplicationTable(int table[ ][ ], int x, int y)

You must load the table array with products of the factors. For example:

In Figure 1 above, the 5 x 5 array is loaded with the products for the times tables from 4 to 8

In Figure 2 above, the 2 x 2 array is loaded with the products for the times tables from 5 to 6

GENERAL RESTRICTIONS FOR ALL QUIZZES, MIDTERM AND FINAL EXAM

No global variables

No infinite loops, examples include:

for(;;)

while(1)

while(true)

do{//code}while(1);

No break statements to exit loops

No labels or go-to statements

If you violate any of these restrictions, you will automatically get a score of ZERO!

Answer 1

Program:

import java.util.Scanner;

public class MultiplyProgram

{

public static void loadArray(int table[][], int x, int y)

{

        for(int r=x,p=0; p<=table.length-1; r++, p++)

        {

            for(int c=x, q=0; q<=table.length-1; c++,q++)

               table[p][q] = r*c;

        }

}

public static void printMultiplicationTable(int table[][], int x, int y)

{

       System.out.print("        ");

       for(int r=x; r<=y; r++)

           System.out.print(r+"\t");

           System.out.println("\n----------------------------------------------------");

         for(int r=x,p=0; p<=table.length-1; r++, p++)

         {

            System.out.print(r+"\t");

                for(int q=0; q<=table.length-1; q++)

                       System.out.print(table[p][q]+"\t");

           System.out.println();

         }

}

public static void main(String[] args)

{

       Scanner s = new Scanner(System.in);

       System.out.print("Enter the starting value \n");

       int x = s.nextInt();

       System.out.print("Enter the ending value \n");

       int y = s.nextInt();

       int m;

       m = y-x+1;

       int[][] table= new int[m][m];

       loadArray(table, x, y);

       printMultiplicationTable(table, x, y);

       s.close();

   }

}

Output:

Enter the starting value Enter the ending value 4 6 16 20 24 28 32 20 25 30 35 40 24 30 36 42 28 35 42 49 56 32 40 48 56 6

Enter the starting value Enter the ending value 6 25 30 30 36 6