Write a JAVA program which: Prints out the Multiplication Table for a range of n

Question

Write a JAVA 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'

SPECIFIC REQUIREMENTS

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

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

3. Use try and catch statements to only allow positive numbers (no strings or negative numbers allowed)

Sample Output:

It should display something like these if the user entered a negative number or a String

GENERAL RESTRICTIONS:

1. No infinite loops, examples include:

a. for(;;)

b. while(1)

c. while(true)

d. do{//code}while(1);

2. No break statements to exit loops

Enter the starting value Enter the ending value 4 3 9 12 4 12 16 good-bye Press any key to continue

Explanation / Answer

Please find my implementation.

import java.util.Scanner;

public class MultiplicationTable {

  

   public static void loadArray(int table[][], int s, int e){

      

       for(int i=s,a=0; a<=table.length-1; i++, a++){

           //System.out.print(i+" | ");

           for(int k=s, b=0; b<=table.length-1; k++,b++)

               table[a][b] = i*k;

       }

      

   }

  

   public static void printMultiplicationTable(int table[][], int s, int e){

       System.out.print(" ");

       for(int i=s; i<=e; i++)

           System.out.print(i+" ");

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

      

       for(int i=s,a=0; a<=table.length-1; i++, a++){

           System.out.print(i+" | ");

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

               System.out.print(table[a][b]+" ");

           System.out.println();

       }

   }

  

   public static void main(String[] args) {

      

       Scanner sc = new Scanner(System.in);

      

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

       int s = sc.nextInt();

      

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

       int e = sc.nextInt();

      

       int n = e-s+1;

       int[][] table = new int[n][n];

      

       loadArray(table, s, e);

      

       printMultiplicationTable(table, s, e);

      

       sc.close();

   }

}

/*

Sample run:

Enter the starting value: 2

Enter the ending value: 7

2   3   4   5   6   7  

------------------------------------

2 | 4   6   8   10   12   14  

3 | 6   9   12   15   18   21  

4 | 8   12   16   20   24   28  

5 | 10   15   20   25   30   35  

6 | 12   18   24   30   36   42  

7 | 14   21   28   35   42   49  

*/

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