How do I find the ceiling and floor for a number from a set of numbers?

Posted by kk on Stack Overflow See other posts from Stack Overflow or by kk
Published on 2010-04-15T11:32:15Z Indexed on 2010/04/15 13:53 UTC
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php

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algorithm

1st number:  50
2.           30
3.           70
4.           40
5.           11

and other number is 33

I need to calculate which two numbers the last number is between (using php) .. any help?

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