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## pypeye 2 years ago Hello there, I'm really trying to understand what the Zellers algorithm in homework Exercise OPT.1 is doing eg why 13*A - 1 and why /5

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1. lh4219

That's the algorithm that derives the day of the week.You don't need to understand what it means; unless your into math.

2. pypeye

Sorry I feeling kinda stupid not knowing what I'm working with. I did the exercise but i'd really like to know a couple of things about the algorithmn. Thanks

3. snark

http://en.wikipedia.org/wiki/Zeller%27s_Algorithm i am not sure that it uses exactly the same formula, but the concept is the same. perhaps you can find better by googling. it's not exactly intuitively obvious...

4. pypeye

Thanks but I had already checked out the formula and thought it would be easier if some of you fine people could explain this one. Anyway I'll google some more then come back if I don't get any. Yes!

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