Download Assignment: Software Categories

Advanced Programming Techniques
Prof. Dr. Bernhard Humm, Hochschule Darmstadt – University of Applied Sciences
Assignment: Software Categories
For all assignments, please, note:
1. Decide which Java programming language constructs are suitable (classes vs. interfaces; new
implementation vs. reusing existing implementation, etc.)
2. Implement your solution. Use English identifiers only
3. Document your solution with JavaDoc (in English)
4. Implement JUnit test cases
5. Test your solution
6. Commit your code to the SVN repository
1
Magic Square Check
A magic square is a square array of distinct integers (each one different), where the numbers in each
row, in each column, and in both diagonals all add up to the same number, called the “magic
constant”. See https://en.wikipedia.org/wiki/Magic_square
Examples:
n = 3:
4
9
2
3
5
7
8
1
6
Seite 1
Advanced Programming Techniques
n = 4:
Albrecht Dürer: „Malinconia“ (1514)
(detail)
Task:
1.
2.
3.
4.
2
Implement a Java application which checks whether an array is a magic square.
Read the n² array elements from a file.
Write the result (as well as error message in case of false inputs) to a file
Strictly separate A software (mathematical logic) from T software (file I/O).
Design interfaces as simply as possible
Optional: Generation of Magic Squares
Implement an application which generates magic squares.
Seite 2