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Code for the Advent of Code event
aoc advent-of-code
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399 B · 16 lines
Ruby
at rust
1234567891011121314151617#!/usr/bin/env ruby# frozen_string_literal: true
reports = ARGF.map { |line| line.split.map(&:to_i) }
def validate(report) diffs = report.each_cons(2).map { _2 - _1 } diffs.all? { (1..3) === _1 } || diffs.all? { (-3..-1) === _1 }end
def validate2(report) report.combination(report.size - 1).any? { validate _1 }end
puts reports.count { validate _1 }puts reports.count { validate2 _1 }