Exporting part of a webpage to PDF is a solved problem, but it took some digging to find the simplest solution that just worked.

Several hours of googling and trying out snippets here and there, here is the sequence that led to success:

1. html2canvas

This library worked well, but for a single div element it generates a single giant image that...

I'm not entirely sure if I have complained about this yet, so here we go. Back in 2009 the blog system here at DreamInCode did not have a way to upload images (or if there was, it eluded me at the time). I then uploaded images I had made for a few of the first data structure blog posts to Photobucket. These images had been up since 2009ish....

Part I
Part II

It turns out I was incorrect at the end of part II. There is in fact a polynomial time algorithm for this problem:



Courtesy of ishkabible and this question.

The algorithm is as follows:

...

Another interesting problem that eventually got locked.

You are on a 2D graph starting at the origin (0,0). Given n vector movements (x,y), what is the max euclidean distance...

I originally came up with this idea over four years ago and after writing the shortest path algorithm, it fell off my radar, I got bored, so on and so forth. I got a wild hair this afternoon and I now present a tech demo of this concept. I have taken a modern map of Europe and overlaid the cities as found in the Ticket To Ride Europe...