Bully’s eye pattern Program plan: Include necessary header files. Declare the class “BullEye” that extends application class. Declare required constant variables. Define the “main()” function. Launch the application. Override the “start ()” method. Create a group, scene, canvas and graphics context. Declare required variables. Set the values for “x_Center”, “y_Center”, and “diameter”. Loop from 0 through total number of circles. Switch to the case (i % 3). If the value is 0, Draw a stroke in red color. Break the case. If the value is 1, Draw a stroke in green color. Break the case. If the value is 2, Draw a stroke in blue color. Break the case. Draw a circle. Update the value of “x_Center” and “diameter”. Add the canvas. Set the title. Add the scene to the stage and display it.

Question

What does the value of the top variable indicate in this ArrayStack implementation? What will happen if we call pop on this stack? What value will be returned, and what changes will occur in the array and the top variable? 3. If we push the value "echo" onto the stack, where will it be stored in the array, and what will be the new value of top? 4. Explain why index 0 contains the string "alpha" even though top is currently 3. 5. What would the state of the stack look like (values in the array and value of top) after two consecutive pop 0 operations?

Answer 1

Question

Chapter 4, Problem 13PP

Program Plan Intro

Bully’s eye pattern

Program plan:

Include necessary header files.

Declare the class “BullEye” that extends application class.

Declare required constant variables.

Define the “main()” function.

Launch the application.

Override the “start ()” method.

Create a group, scene, canvas and graphics context.

Declare required variables.

Set the values for “x_Center”, “y_Center”, and “diameter”.

Loop from 0 through total number of circles.

Switch to the case (i % 3).

If the value is 0,

Draw a stroke in red color.

Break the case.

If the value is 1,

Draw a stroke in green color.

Break the case.

If the value is 2,

Draw a stroke in blue color.

Break the case.

Draw a circle.

Update the value of “x_Center” and “diameter”.

Add the canvas.

Set the title.

Add the scene to the stage and display it.

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