Visualization on Hieu Phay

Advent of Code 2021 in Julia – Day 13: Transparent Origami

Mon, 13 Dec 2021 00:00:00 +0000

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Alright! We’re halfway through! The puzzle today is easier than the last, as a “monday” puzzle would, but it is fun nontheless. The puzzle format break out from the tradition of “compute in this method and return this number.” To solve for the puzzle today, you actually have to visualize to see the output.

Part 1

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You reach another volcanically active part of the cave. It would be nice if you could do some kind of thermal imaging so you could tell ahead of time which caves are too hot to safely enter.

Advent of Code 2021 in Julia – Day 6: Lanternfish

Mon, 06 Dec 2021 00:00:00 +0000

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The problem today is a bit of a breather. (Puzzles are easier on weekdays.) Still, I fell right into their trap! But it’s alright. In fact, I really like this puzzle, because I had tons of fun toying with its visualization!

Part 1

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The sea floor is getting steeper. Maybe the sleigh keys got carried this way?

Advent of Code 2021 in Julia – Day 5: Hydrothermal Venture

Sun, 05 Dec 2021 00:00:00 +0000

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I thought the challenge today would be easy, but in the end I spent too much time on it. Around halfway through I realized that I forgot to offset the index, because Julia indexes begin at 1 instead of 0. On the other hand, I learnt how slurping and splatting with ... works, which provide shorthand for “unwrapping” arrays, to be used inside functions.

A bubbly look at the Bitcoin bubble

Tue, 02 Jan 2018 00:00:00 +0000

2017 was an insane year in the cryptocurrency world as bitcoin and other cryptocurrencies (so-called altcoins) caught the attention of mainstream media. This is associated to the fact that Bitcoin and other cryptos’ prices surged exponentially in a historically short period. Bitcoin went from less than 1000 usd per coin in January 2017 to 13500 usd by the end of the year, with its peak even reached 20000 at sometime during December.