I suggest you try documenting it yourself.

Some advice on how/where to start:

• Come up with an alogirthm to be used: take a piece of paper and try to solve the problem yourself. Go over each pair and make a note on how you decide in which group to put that pair;
• Post your algorithm here (in English);
• Try to turn your algorithm into code;
• Test the code;
• Post the code;
• Look back at the code I posted and see if you can understand what I wrote and why I wrote it. If question ask.;

I suggest this for the following reasons:

• It should be more rewarding;
• You will learn more;
• You will remember what you learned a lot longer;

The obvious downside is that it will take your more time to figure it out. If I document it/explain it then you know how to solve this particular problem but you might not be able to solve another, similar, problem since you might not see the alogirthm and/or forgot on how this problem was solved.

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