CSci 133, Lab Exercise 3

School of Engineering and Applied Science
Department of Computer Science
CSci 133 -- Introduction to Software Development
http://www.seas.gwu.edu/~csci133/spring03
Prof. Michael B. Feldman
mfeldman@gwu.edu

Lab Exercise #3
for labs meeting Friday, Jan. 31, 2002

Objectives: The purpose of this lab is to implement a small part of Project 2 and explore shallow and deep copying of array structures.

Part 1:

Implement Part 1 of Project 2: complete and test the methods of the class ChessPosition, located in the file programs133/ChessPosition.java.

Part 2:

Now develop a program -- use programs133/Lab3.java as a starting point -- that will

create a 10-element array A1 of positions.
store position values in the first 5 array locations.
use an ordinary = assignment operator to "copy" A1 to another array A2. You can just make this method a part of the application program.
copy A1 to A2 and display the two arrays
modify one of the values in A2 and display again

Now "play with" this program as time allows. Here are some suggestions:

now write a method copy(ChessPosition[]) that implements a deep copy. That is, A2 = copy(A1) would copy the one array to the other.
copy A1 to A2 and display the two arrays.
use == to see whether A1 and A2 are "equal".
now write a boolean method isEqual(ChessPosition[]) that implements a "deep" equality test. That is, if B is a boolean variable, B = A1.isEqual(A2) would do the equality test.

(end of lab)