Chapter 5, Problem 1E

Explanation of Solution

Program:

//definition of "Main" class

class Main

{

    //definition of main method

    public static void main(String[] args)

    {

        //call the method with different values

        showTwos(7);

        showTwos (18) ;

        showTwos(68);

        showTwos(120) ;

    }

    //definition of "showTwos" method

    public static void showTwos(int n)

    {

        //display "n" value

        System.out.print(n + " = ");

        //check "n" mod 2 is 0

        while (n % 2 == 0)

        {

            //display the line

            System.out.print("2 * ");

            //divide the "n" by 2

            n = n / 2;

        }

        //display "n" value

        System.out.println(n);

    }

}

Explanation:

In the above program, the “Main” is the class name

• Inside “main” method, call the “showTwos” method with different values.
• Inside the “showTwos” method,
  • Display the “n” value with “=” symbol.
  • Check “n” mod 2 is equal to 0
    • Display the “2 *” on the output screen.
    • Divide “n” by 2 and store the result in “n”.
  • Display the “n” value.

Sample Output

Output:

7 = 7

18 = 2 * 9

68 = 2 * 2 * 17

120 = 2 * 2 * 2 * 15