Java: An Introduction to Problem Solving and Programming (7th Edition)
Java: An Introduction to Problem Solving and Programming (7th Edition)
7th Edition
ISBN: 9780133766264
Author: Walter Savitch
Publisher: PEARSON
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Textbook Question
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Chapter 11, Problem 1E

What output will be produced by the following code?

public class Demo

{

  public static void main (String[] args)

{

  System.out.println (“The output is:”);

  foo (23);

  System.out. println ();

  }

  public static void foo (int number)

  {

  if (number > 0)

  {

  foo (number / 2);

  System.out.print (number % 2);

  }

  }

}

Expert Solution & Answer
Check Mark

Explanation of Solution

Given code:

//Definition of class "Demo"

public class Demo

{

    //Definition of main class

    public static void main(String[] args)

    {

        //Print the statement

        System.out.println("The output is:");

        //Call the method "foo()"

        foo(23);

        //Print new line

        System.out.println();

    }

    //Definition of method "foo"

    public static void foo(int number)

    {

        //Check the condition

        if (number > 0)

        {

            //Call the method "foo()"

            foo(number / 2);

            //Print the output

            System.out.print(number % 2);

        }

    }

}

Explanation:

  • • In the above code, it calls the method “foo()” in the main class.
  • • The method “foo()” is defined.
    • ○ Inside the method, it checks the condition “number>0”, if the condition satisfies recursively calls the method “foo()”.
    • ○ Print the result after determining “number%2”.
Sample Output

Output:

The output is:

10111

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Chapter 11 Solutions

Java: An Introduction to Problem Solving and Programming (7th Edition)

Ch. 11.2 - What Java statement will sort the following array,...Ch. 11.2 - How would you change the class MergeSort so that...Ch. 11.2 - How would you change the class MergeSort so that...Ch. 11.2 - If a value in an array of base type int occurs...Ch. 11 - What output will be produced by the following...Ch. 11 - What output will be produced by the following...Ch. 11 - Write a recursive method that will compute the...Ch. 11 - Write a recursive method that will compute the sum...Ch. 11 - Complete a recursive definition of the following...Ch. 11 - Write a recursive method that will compute the sum...Ch. 11 - Write a recursive method that will find and return...Ch. 11 - Prob. 8ECh. 11 - Write a recursive method that will compute...Ch. 11 - Suppose we want to compute the amount of money in...Ch. 11 - Prob. 11ECh. 11 - Write a recursive method that will count the...Ch. 11 - Write a recursive method that will remove all the...Ch. 11 - Write a recursive method that will duplicate each...Ch. 11 - Write a recursive method that will reverse the...Ch. 11 - Write a static recursive method that returns the...Ch. 11 - Write a static recursive method that returns the...Ch. 11 - One of the most common examples of recursion is an...Ch. 11 - A common example of a recursive formula is one to...Ch. 11 - A palindrome is a string that reads the same...Ch. 11 - A geometric progression is defined as the product...Ch. 11 - The Fibonacci sequence occurs frequently in nature...Ch. 11 - Prob. 4PPCh. 11 - Once upon a time in a kingdom far away, the king...Ch. 11 - There are n people in a room, where n is an...Ch. 11 - Prob. 7PPCh. 11 - Prob. 10PP

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