coursera java for android assignment answers

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Data structures and performance | week 6, data structures and performance | week 5, data structures and performance | week 4, data structures and performance | week 3, data structures and performance | week 2, data structures and performance | week 1, algorithmic toolbox | week 6, algorithmic toolbox | week 5, algorithmic toolbox | week 4, algorithmic toolbox | week 3.

Java Programming: Solving Problems with Software Coursera Quiz answers

In this post, you will get all weeks quiz answers of Java Programming: Solving Problems with Software Coursera.

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Course overview ( All weeks quizzes answers link )

Week 1: Java Programming: Solving Problems with Software Coursera Quiz answers

• Week 2: Java Programming: Solving Problems with Software Coursera Quiz answers
• Week 3: Java Programming: Solving Problems with Software Coursera Quiz answers
• Week 4: Java Programming: Solving Problems with Software Coursera Quiz answers

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Now, let’s start with Week 1 quiz answers which is a part o f Java Programming: Solving Problems with Software

Below you’ll find all practice quiz answers of different topics/sections in Java Programming: Solving Problems with Software Coursera Quiz answers and end quiz exam answers under week 1.

Practice Quiz: Getting Started with BlueJ Quiz Answers Coursera – 3 questions

Q1: Suppose you have written a Java program that has one class and one method. Which one of the following best describes what you need to do in order to run the program?

a) Compile the program, create a new object for the class, and call the method. b) Compile the program, call the method, and then create a new object for the class. c) Create a new object for the class, compile the program, and call the method. d) Create a new object for the class, call the method, and then compile the program.

Answer: a) Compile the program, create a new object for the class, and call the method.

Q2. Which one of the following best describes what happens when one compiles a Java program in BlueJ on their computer?

a) Your Java program opens and processes the data files specified in your program. b) The .class file is translated into a file that can be run on that computer. c) The .java file is translated into a .class file that can be run on that computer. d) A Java object is created that can be run on that computer.

Answer: c) The .java file is translated into a .class file that can be run on that computer.

Q3. Which one of the following best describes BlueJ?

a) BlueJ is a programming environment. b) BlueJ is a word processor for editing code. c) BlueJ is an object-oriented programming language. d) BlueJ is software that organizes data files.

Answer: a) BlueJ is a programming environment.

Q4. Which one of the following best describes how one knows in BlueJ that a class has compiled successfully?

a) The program automatically runs to indicate compilation success. b) The class icon turns the color red to indicate compilation success. c) An object is automatically created to indicate compilation success. d) The class icon removes the shaded diagonal lines to indicate compilation success.

Answer: d) The class icon removes the shaded diagonal lines to indicate compilation success.

Practice Quiz: Variables and Mathematical Operators Q uiz Answers Coursera – 3 questions

Q1. Consider the following Java statements.

What is the value of c after these lines execute?

Q2. Consider the following Java statements.

Q3. Consider the following Java statements.

Practice Quiz: Functions and Conditionals Q uiz Answers Coursera – 3 questions

Q1. Before you start writing your own Java programs, it is important you fully understand what your Java code will do. Try solving the following problems in this quiz by hand.

Consider the following Java methods.

What is the return value of the call h()?

Q2. Consider the following method g.

What is the value returned from the call g(5)?

Q3. Consider the following method k.

For which of the values a and b would 2 be the return value?

a) a=2, b=0 b) a=1, b=3 c) a=6, b=8 d) a=6, b=6

Answer: d) a=6, b=6

Practice Quiz: Classes, Types, and For Each Loops Q uiz Answers Coursera – 5 questions

Q1. Consider the following method play , and assume appropriate import statements are there for classes used in this function.

Without seeing any details of classes used in this program and their methods, but assuming the methods shown are valid methods for these classes, which one of the following are methods in the Frog class?

a) hop, jump and say b) only jump c) hop and say d) only hop e) only say

Answer: c) hop and say

Q2. Consider the following Java class.

Which method is the constructor?

a) geta b) a c) Thing d) print

Answer: c) Thing

Q3. Consider the following class named Something that uses the edu.duke FileResource class.

Suppose the file words.txt contains the following lines:

cat giraffe bird zebra

How many times is the for loop executed?

Q4. Consider the following Java code segment.

Which one of the following arithmetic expressions would need a cast for the addition to work? (Hint: Review the video on Types if you are unsure what casting variables means.)

a) double w = d + f; b) int y = n + f; c) int x = m + n; d) double z = m + f;

Answer: b) int y = n + f;

Q5. Consider the following Java class.

And consider the following code segment that uses the Thing class.

Which one of the following is NOT a primitive type?

a) f b) x c) a d) b

Answer: a) f

Q6. Consider the following BlueJ program.

Which one of the following is the name of a method?

a) DoSomething b) someFile c) Mystery d) phrase

Answer: a) DoSomething

Q7. Consider the following Java class.

What is (or are) the instance variable(s) in this class?

a) a and x b) a, x, and b c) a d) x e) b

Answer: c) a

Q8. Consider the following Java class.

And consider the following code segment that uses the class Thing.

How many Thing objects are created?

Q9. Consider the Thing class shown below.

What is printed when this code is executed?

Answer: c) 14 8

WEEK 1 QUIZ

Calculating the perimeter of a shape week 1 quiz answers coursera – 7 questions.

This is the end quiz of week 1 in Java Programming: Solving Problems with Software Coursera Quiz answers. It is necessary to complete with 80% or higher.

Q1. What is the perimeter of the shape made from the file datatest1.txt whose contents are shown below (just give to two decimal places)? -3, 3 -4, -3 4, -2 6, 5

Answer: 30.64

Q2. What is the average length of a side in the shape made from the file datatest1.txt whose contents are shown below (just give to two decimal places)? -3, 3 -4, -3 4, -2 6, 5

Answer: 7.66

Q3. What is the longest side in the shape made from the file datatest4.txt whose contents are shown below (just give to two decimal places)? -3, 9 8, 7 -12, 4 -6, -2 -4, -6 2, -8 6, -5 10, -3 8, 5 4, 8

Answer: 8.48

Q4. What is the largest perimeter of a shape made from the shapes in files dataset1.txt, dataset2.txt, dataset3.txt, dataset4.txt, dataset5.txt, and dataset6.txt (just give to two decimal places)?

Answer: 62.65

Q5. What is the name of the file that has the shape with the largest perimeter from the six files dataset1.txt, dataset2.txt, dataset3.txt, dataset4.txt, dataset5.txt, and dataset6.txt ?

a) dataset1.txt b) dataset2.txt c) dataset3.txt d) dataset4.txt e) dataset5.txt f) dataset6.txt

Answer: e) dataset5.txt

Q6. The method getNumPoints returns the number of points in a Shape s.

Which one of the following is NOT a correct implementation of getNumPoints?

Q7. Consider the following code for the function mysteryShape that has one parameter a Shape s and calls the function getNumPoints from the assignment.

Which one of the following best describes the purpose of this function?

a) The function computes the sum of those points from the Shape s that have a positive X or a negative Y . b) The function computes the sum of those points from the Shape s that have a positive X and a negative Y. c) The function computes the percentage of those points from the Shape s that have a positive X or a negative Y . d) The function computes the percentage of those points from the Shape s that have a positive X and a negative Y .

Answer: d) The function computes the percentage of those points from the Shape s that have a positive X and a negative Y.

Q8. What is the name of the file that has the shape with the largest perimeter from the four files  example1.txt, example2.txt, example3.txt and example4.txt ?

Answer: example3.txt

Q9. What is the perimeter of the shape made from the file  database4.txt  whose contents are shown below (just give to two decimal places)? -3, 9 8, 7 -12, 4 -6, -2 -4, -6 2, -8 6, -5 10, -3 8, 5 4, 8

Answer: 59.45

Q10. What is the average length of a side in the shape made from the file  datatest4.txt  whose contents are shown below (just give to two decimal places)? -3, 9 8, 7 -12, 4 -6, -2 -4, -6 2, -8 6, -5 10, -3 8, 5 4, 8

Answer: 5.94

>> Next: WEEK 2: Java Programming: Solving Problems with Software Coursera Quiz answers

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