bhoffman0/csawesome

This is the CSAwesome curriculum Runestone repo for the AP CS A Java Course

CSAwesome

This is an eBook curriculum for the AP Computer Science A Exam on Runestone at https://runestone.academy/runestone/books/published/csawesome/index.html.

Authors

This book is based on the Java Review ebook written by Barbara Ericson of University of Michigan - @ericsonga

This book was revised by Beryl Hoffman of Elms College and the Mobile CSP project in 2019 for the 2019 AP CS A exam.

Many others have contributed. For the most up to date listing of who has contributed to the ebook see the preface in Unit 1.

csawesome's Issues

Lesson 4.5 grammatical error

Just below Activity 1

"Did you trace table look like the following?"

Need to update conf.py for new runestone release

Same as what I did for mobilecsp needs to be done for CSAwesome.

Unit 4 Consumer Review Lab is out-of-sync with Replit

It looks like the Review.java file in the Unit 4 Consumer Review Lab is missing the removePunctuation method that was added to the same file in Replit. Based on the comment it sounds like the method was added to the teacher code.

Typo in 1.7.2

Hello! Here's another one raised by the same user that reported the last one:

https://runestone.academy/ns/books/published/csawesome/Unit1-Getting-Started/topic-1-7-summary.html?mode=browsing#java-keyword-summary

csawesome on runestone is down at the moment

1.5.2 Summary Issue

Hello there!

Richard here from the Coding Rooms team. Hope you're doing well. One of our users mentioned an issue in the content here, where an emdash looks to have replaced what should be --.

https://runestone.academy/ns/books/published/csawesome/Unit1-Getting-Started/topic-1-5-shortcutoperators.html#summary

9.5.3. Superclass Arrays and ArrayLists Unit Test

The last unit test, "Checking that code contains petList.add(new Cat())" fails unless a call to the constructor of Cat is passed null.
Specifically,
import java.util.; // for ArrayList

public class Pet
{
private String name;
private String type;

 public Pet(String n, String t)
 {
    name = n;
    type = t;
 }
 public String toString()
 {
    return name + " is a " + type;
 }

 public static void main(String[] args)
 {
     ArrayList<Pet> petList = new ArrayList<Pet>();
     petList.add(new Pet("Sammy","hamster"));
     petList.add(new Dog("Fido"));
     petList.add(new Cat("Fluffy"));
     petList.add(new Cat("?"));
     petList.add(new Cat(null));                   // passes with this statement; fails otherwise
     
     // This loop will work for all subclasses of Pet
     for(Pet p : petList)
     {
        System.out.println(p);
     }
 }

}
class Dog extends Pet
{
public Dog(String n)
{
super(n, "dog");
}
}

class Cat extends Pet
{
public Cat(String n)
{
super(n, "cat");
}
}

Unexpected Code Evaluation

Reproducible on Activity: 6.2.5.3 ActiveCode
Screenshot
Expected behavior: Fail status since -1 != 1

Autograder Issue for 4.1.5

Hi @bhoffman0 and team.

A Coding Rooms user (JKearns) reported an issue with the autograder not passing the While loop test in the tests for 4.1.5. Both examples below pass all other tests.

This one here:

Here is an example of code that does not pass the while loop check, even though it does produce a while loop on run in Runestone:

import java.util.Scanner;

public class Main
{
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);
        int num_r = (int)(Math.random()*101);
        System.out.print("Number 0-100: ");
        int user_g = scan.nextInt();
        while (user_g!=num_r)
        {
            if (user_g < num_r){
                System.out.println("Too low!");
            }
            if (user_g > num_r){
                System.out.println("Too high!");
            }
            System.out.print("Number 0-100: ");
            user_g = scan.nextInt();
        }
        System.out.print("You got it");


    }
}

Here is an example of code that does pass the while loop:

import java.util.Scanner;

public class Main
{
    public static void main(String[] args)
    {
        Scanner scan = new Scanner(System.in);
        // Choose a random number from 0-100
      
        int num = (int) (Math.random() * (100)) + 1;

        System.out.println("Try to guess a number between 0 and 100");
        int guess = scan.nextInt();

        while (guess != num) {
            if (guess > num)
            System.out.println("Too high!");

            guess = scan.nextInt();

            if (guess < num)
            System.out.println("Too low!");
        }
            if (guess == num)
            System.out.println("You got it!");
            
        scan.nextInt();
        if (guess == num)
        System.out.println("You got it!");

    }
}

Code Assignment 7.4.1.3 autograder issue

Hi Beryl,

One of the Coding Rooms users noticed that a test case was not fulling passing even though it showed two individual tests that both passed.

The issue seemed to be related to the main method test not working properly.

@Test
   public void testMain() throws IOException
   {
     String output = getMethodOutput("main");
     String expect = "[TNA, BARCADABARA, PAPLE]";
     boolean passed = output.contains(expect);
     assertTrue(passed);
     System.out.println("expected output from main");
   }

Upon investigation, we noticed Runestone has the same issue.

Autograder issue for a 1.10 Code Practice Q

Hi @bhoffman0 and team.

A Coding Rooms user reported an issue with the autograder not giving full credit on one of the coding practice questions on 1.10.

It is this one:

Runestone and Coding Rooms only shows one test's result but there are two tests.

Sadly I do not have time right now to discover what the issue is and help. Was hoping maybe @kmcdonnell2 would be able to spot it easily.

CSA 12.2, Exam 2, Question 13

A Coding Rooms user reported an issue in the 12-2-13 question which appears to be present on Runestone around the 12th line:

AP Practice test 12.2 Exam 1 Question 13
Inner for loop should not have println