Here's my try:
The following function returns the rectangle number given the dimensions of
the rectangle.
int FindRectangleNumber(int row, int colm)
{
if (row == colm)
return row;
if (row == 1)
return colm;
if (row%2 == 0 && colm%2 == 0)
return 2*FindRectangleNumber(row/2, colm/2);
if (row%2 == 1 && colm%2 == 0)
return FindRectangleNumber(row - 1, colm) + 2;
if (row%2 == 0 && colm%2 == 1)
return FindRectangleNumber(row, colm - 1) + 2;
if (row%2 == 1 && colm%2 == 1)
return FindRectangleNumber(row - 1, colm-1) + 1;
}
This function can be used to solve the given problem.
On Sun, Aug 22, 2010 at 3:29 PM, Saikat Debnath <saikat....@gmail.com>wrote:
> Can anyone help in finding number of rectangles having a given
> recatngle number. A rectangle number is defined as the number of unit
> sided square formed inside the given rectangle having a common point
> with a diagonal of rectangle. The sides of rectangle have integer
> length. E.g. number of rectangle with rectangle number 4 is 4, i.e.
> 1X4, 2X4, 2X3 and 4X4.
>
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