Day 5

2023/day5/p1.rb

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+# frozen_string_literal: true
+
+f = File.open('./2023/day5/data')
+seeds = f.first.strip.split(': ')[1].split(' ').map(&:to_i)
+updated_seeds = seeds.clone
+
+f.each_line do |line|
+  seeds = updated_seeds if line.include? 'map'
+  next if line.include?('seed') || line.strip.empty? || line.include?('map')
+
+  source_start = line.split(' ')[1].to_i
+  dest_start = line.split(' ')[0].to_i
+  range = line.split(' ')[2].to_i
+
+  updated_seeds = seeds.each_with_index.map do |seed, i|
+    if seed >= source_start && seed < source_start + range
+      dest_start + (seed - source_start)
+    else
+      updated_seeds[i]
+    end
+  end
+end
+
+puts updated_seeds.min