How to get row and column from index?

Question

I\'m drawing a HUGE blank here.

Everything I\'ve found is about getting an index from a given row and column, but how do I get a row and a column from an in

Answer 1

For a zero-based index, the two operations are:

row    = (int)(index / width)
column = index % width

I'm using % here since I'm a C guy and, though you haven't specified your language, it certainly looks like one of the C-based ones.

If your question does not pertain to C or its brethren, it will be whatever the modulo operator is for your particular environment, the remainder left over when you divide index by width.

If you don't have a modulo operator, you can use:

row    = (int)(index / width)
column = index - (row * width)