How many boxes do I need to store 5 objects if only 2 objects fit into each box? Replacing our original question with x = 5 and y = 2 we have: The remainder/fractional part of any division operation is simply dropped, thus: In languages derived from C, you get it automatically when you divide int types ( short, int, long, etc.). Many programming languages support integer division. You'll recall from 3 rd grade math that integer division is what we're doing when we say 5 ÷ 2 = 2.įloating-point division is when we say 5 ÷ 2 = 2.5, but we don't want that here. is (x + y - 1) ÷ y using integer division.derives from the realization that the last box might be partially empty, and.How many boxes do I need to store x objects if only y objects fit into each box? OP's question generalizes ( pigeonhole principle) to: We do not want the overhead of a function call ( Math.Truncate(), Math.Ceiling(), etc.) when simple math is enough.
#XLIST DIVIDE OPERATOR CODE#
How would I code it so i get 2 in this case (the remainder should always add 1)Īnswer 1: Math.Ceiling(( double)list.Count() / 10) Įverything else here is either overkill or simply wrong (except for bestsss' answer, which is awesome). i get a list of records and i want to split into 10 per page (the page count)Īnd the list.Count() =12, i get a result of 1. I am trying to find total pages in building a pager on a website (so i want the result to be an integer.
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