# JIT blogging

I'm always doing other things and then Sunday comes and I start thinking, "How much time do I have before it's midnight in London?"

When "The Perl Challenge" first started, I was happy to just ponder the problems. Then came the pandemic and I thought that I would use some of my then copious free time to contribute. Then time got not-so-copious. And more people started contributing to TWC, some people much more talented than me, it turns out.

So I'll take a stab at things when I can and I'll still try to write a stand-alone script the way (I wish) I would at work, but my threatened laxness in writing things up will be more of a promise: Light banter to cast a veneer of confidence on the correctness of my results, anything else is extra.

## TWC Task #1, Ugly Numbers

### Higher Order Perl, Chapter 6, "Infinite Streams," Section 6.4, "The Hamming Problem"

The "Ugly Numbers" problem is "The Hamming Problem" in Higher Order Perl (HOP) and I can't improve upon Dominus's solution. and its exposition on The Hamming Problem (start at page 269).

How's that for being lazy? ;-)

## TWC Task #2, Square Points

### jaredor submission for Task #2

I've been on a geometry kick recently, so am just going to free-form the approach to the answer. This is also the first time I've written up a review prior to writing the code. But I see the way forward:

#### From the four given points:

• Create six line segments, then
• Sort the line segments by length, then
• If the first and the fourth line segments are of equal length, and
• If the fifth and sixth line segments are of equal length, then
• You have a square!

Oh, and one thing to do, whenever you compare floating point numbers, you need to decide what your tolerance for equality is. Me? I think it's 0.0001 today.

Okay, it's time to go write the sucker. It's just after 11pm in London, so better get cracking.

## Submitted ten minutes past midnight in London Town! I'm not as quick as I thought I'd be :-(

Mohammad works hard and deserves his sleep, so I like to think that he is shutting down the old laptop at 12:00:01 am, or (00:00:01 for you 24-hour clockers). I'll just sit in the back of the auditorium like all the rest who shuffle in late....