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Put it after any statement that changes the value of an array variable so you can see what value was assigned to that variable.

What are you expecting?

Next you need to verify that the sort is working as desired.
To see if it is, add some println() statements that print out the contents of the arrays that are used to hold...

If commenting out a statement is too hard, then this whole assignment will be too hard.

The line number where the exception is thrown is shown in the error message:

To comment out a statement:
put // in column 1
or
wrap the statement: /* THE STATEMENT */

Comment out the throws statement to keep it from throwing the exception.

There are many types of sorts. Has your instructor told you which one to use and how its parts can be separated to run on...

Improving an algorithm doesn't mean using threads.

That exception is because the code chooses to throw it. The code must be rewritten so that exception is not thrown.

Have you been able to compile and execute the current code and have it do a sort?
What "improvement" do you expect by using threads? Does the "improvement" depend on the type of computer the code...

The above exception comes from the following statement in the code:


throw new java.lang.IllegalStateException("Method not implemented");

Ask the author of that code why that statement is...

Start by copying a working example from the tutorial.
Make a simple change to the code, compile and execute it. If there are problems, copy the code and the full text of the error messages and...

Java Platform SE 7

And the tutorial:
http://docs.oracle.com/javase/tutorial/essential/concurrency/threads.html

Please edit your post and wrap your code with code tags:


YOUR CODE HERE

to get highlighting and preserve formatting.

A sort would be done the same way in a thread the code explicitly...