
Data Structures and Algorithms in Java
6th Edition
ISBN: 9781118771334
Author: Michael T. Goodrich
Publisher: WILEY
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Chapter 1, Problem 9R
Program Plan Intro
Removing all the punctuations from a string
Program plan:
- Create a class StringBuilder to remove all the punctuation stored in a string.
- In main() function,
- Initially, assign the original string in variable.
- Then, invoke the removeIt()function to remove all the punctuation in a string and store the final value in original string.
- Display the string after removing the punctuation in console screen.
- In the method removeAt(),
- It passes input parameter “s” to check whether the character contains punctuation in the string. If yes, then it removes all the punctuation stored in the string “s”.
- For loop read all the characters from a sentence until the condition leads to false.
- Then, it calls the function ok() and check whether the character at “j” position matches with the character or not.
- If the result returns the Boolean value false, then delete the character at the specified position in “j” otherwise store the character using Tostring() method in “s” variable.
- In the method ok(),
- It passes input parameter “i” to check whether the character in the sentence matches with the corresponding ASCII values.
- If yes, then it returns the Boolean value true otherwise it return false.
- It passes input parameter “i” to check whether the character in the sentence matches with the corresponding ASCII values.
- In main() function,
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Lab 07: Java Graphics
(Bonus lab)
In this lab, we'll be practicing what we learned about GUIs, and Mouse events. You will need to
implement the following:
➤ A GUI with a drawing panel. We can click in this panel, and you will capture those clicks as a
Point (see java.awt.Point) in a PointCollection class (you need to build this).
о The points need to be represented by circles.
Below the drawing panel, you will need 5 buttons:
о
An input button to register your mouse to the drawing panel.
○
о
о
A show button to paint the points in your collection on the drawing panel.
A button to shift all the points to the left by 50 pixels.
The x position of the points is not allowed to go below zero.
Another button to shift all the points to the right 50 pixels.
The x position of the points cannot go further than the
You can implement this GUI in any way you choose. I suggest using the BorderLayout for a panel
containing the buttons, and a GridLayout to hold the drawing panel and button panels.…
Chapter 1 Solutions
Data Structures and Algorithms in Java
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