Sounds like homework. I'll give you a hint. When you want to keep track of things you've seen, a hash is usually what you want.

You'll have a lot better luck getting help if you actually give it a go and post what you've got.

-Lee
"To be civilized is to deny one's nature."

In reply to Re: How to not print the same random number by shotgunefx
in thread How to not print the same random number by Anonymous Monk

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