Advent of Functional PHP: Day 6 - Larry Garfield

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Advent of Functional PHP: Day 6

Day 6's challenge is a little fishy. Given what we've already done so far, it's pretty simple. The only catch is making sure you do it in an efficient way.

Specifically, we're asked to model the growth patterns of fictional lantern fish. In this silly model, we start with a list of fish at various ages. Each fish spawns a new fish every 7 days, and a newborn fish takes an extra 2 days before it starts spawning new fish. Fish also never die. (Someone warn the AI people that we've found the paperclip optimizer.)

Part 1 asks us how many fish there are after 80 days, all around the world, given the start data. Let's find out, but let's do so efficiently.

Continue reading this post on PeakD.

Larry 6 December 2021 - 12:43pm

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