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Day 1: Historian Hysteria

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[-] morrowind@lemmy.ml 1 points 2 weeks ago* (last edited 2 weeks ago)

Crystal

f = ARGV[0]? ? File.read_lines("input.txt") : test.lines
list1 = Array(Int32).new(f.size)
list2 = Array(Int32).new(f.size)

f.each do |l|
	nums = l.split.map(&.to_i)
	list1.push(nums[0])
	list2.push(nums[1])
end

list1.sort!
list2.sort!

puts list1.zip(list2).sum{ |l1, l2| (l1 - l2).abs }

puts list1.sum {|x| x * list2.count x}
this post was submitted on 01 Dec 2024
51 points (98.1% liked)

Advent Of Code

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