quote:

**techant wrote**:

I would be thankful to anyone who reviews my entry and notices if I have missed something. Jutt caught one thing which I fixed but with mine so many entries back it is by now out of site out of mind. That is until the final evaluation, and then it is too late I fear. So, any warning would be very helpful.

In looking through I could not find any mistakes. I think the major strength, and part I liked the best, was the simplicity of encoding/decoding. My comment would be that your system is best for people with repeating numbers, and unfortunately the vast majority of people would have few, if any repeating numbers.

To look at it another way, if there were 99 people with numbers 1-99, only 9 of them would have repeating numbers (11, 22, 33 etc). 1-999, again only 9 would have 3 repeating numbers (111, 222, etc), and I believe 171 would have two repeating numbers.

Proof:

Click here to view the secret text

×110, 112, 113, ... 119 - 9 total

11, 211, 311, ... 911 - 9 total, and 18 total for repeating 1's

220, 221, 223, ... 229 - 9 total

22, 122, 322, ... 922 - 9 total, and 18 total for repeating 2's

Continue the idea, there are 9 digits, multiplied by 18 gets us 162. In addition there are 100, 200, ... 900. So in total there are 162 + 9 = 171.

The remaining 819 would have no repeating numbers. I saw that as the biggest weakness of your system, that it does not necessarily make depicting those numbers any easier.

If you were to design another system, that would be the one area I would focus on fixing.

____________________________

"

A problem worthy of attack, proves its worth by fighting back."

Paul Erdös

*[Last edited by captainzakku at 01-24-2008 01:56 PM]*