Mercurial > repos > other > adventofcode2023
view day1b.rb @ 31:47dc75915e91
Implement falling/destroying blocks
Implemented part 1 with supports/supported by logic.
Implemented part 2 with cascades and summing counts. Code has
caching so it is quick _but_ it gives an answer that's too low.
author | IBBoard <dev@ibboard.co.uk> |
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date | Wed, 03 Jan 2024 17:00:56 +0000 |
parents | 76cc43966538 |
children |
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#! /usr/bin/env ruby if ARGV.length != 1 abort("Incorrect arguments - pass a single file") elsif not File.exist? (ARGV[0]) abort ("File #{ARGV[0]} did not exist") end file = ARGV[0] sum = 0 number_map = { "one" => 1, "two" => 2, "three" => 3, "four" => 4, "five" => 5, "six" => 6, "seven" => 7, "eight" => 8, "nine" => 9 } (1..9).each {|i| number_map[i.to_s] = i} File.open(file, "r").each_line do |line| pos = line.length value_1 = 0 number_map.each do |k,v| index = line.index(k) if index and index < pos value_1 = v pos = index end end pos = line.length line.reverse! value_2 = 0 number_map.each do |k,v| index = line.index(k.reverse) if index and index < pos value_2 = v pos = index end end sum += (value_1 * 10) + value_2 end puts sum