How can I modify this algorithm which reorders a ?
Background:
I asked this question yesterday:
How to modify the orientation of a
- spanning multiple columns?
asking how to
-
I think it's simpler to represent the items as a 1-D list (a,b,c...) and think about how to 1) get that from the original array and 2) transform it into the output array.
Step 1 is easy, because the 1-D list is the same order as the
elements in the HTML source.So, suppose we have
nelements and we want to put them intoRrows andCcolumns but filling columns first. The element that goes in position (r,c) (0 based) is just element #R*c + r. And, as stated before, the order in the source file is the row-first order, or (0,0), (0,1), (0,2), ...If the # of elements doesn't fill the RxC grid exactly, then you have to add checks that the computed element number doesn't exceed
n(easiest way is to pad the list with empty elements beforehand).Depending on the design requirements, you can also adapt this to minimize the number of blank elements given a fixed number of rows or columns.
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