day09/input.sample

@@ -1,20 +0,0 @@
-35
-20
-15
-25
-47
-40
-62
-55
-65
-95
-102
-117
-150
-182
-127
-219
-299
-277
-309
-576

day09/solution1.rb

@@ -1,18 +0,0 @@
-#!/bin/env ruby
-
-def valid_nums (nums)
-    nums.map { |num| nums
-        .map { |sub| sub + num if sub != num }}.flatten.uniq.compact
-end
-
-numbers = File.readlines('./input').to_ary.map(&:strip!).map(&:to_i)
-preamble = 25
-
-
-numbers.each.with_index do |number, i|
-    next if i < preamble
-    if !valid_nums(numbers[(i-preamble)..(i-1)]).include?(number)
-        puts number
-        break
-    end
-end

day09/solution2.rb

@@ -1,41 +0,0 @@
-#!/bin/env ruby
-
-def valid_nums (nums)
-    nums.map { |num| nums
-        .map { |sub| sub + num if sub != num }}.flatten.uniq.compact
-end
-
-def find_invalid (numbers, preamble)
-    numbers.each.with_index do |number, i|
-        next if i < preamble
-        if !valid_nums(numbers[(i-preamble)..(i-1)]).include?(number)
-            return i, number
-            break
-        end
-    end
-end
-numbers = File.readlines('./input').to_ary.map(&:strip!).map(&:to_i)
-preamble = 25
-
-index, wrong_number = find_invalid(numbers, preamble)
-
-pp index, wrong_number
-numbers.slice!(index..)
-numbers.delete_if { |number| number > wrong_number }
-
-max = numbers.length
-step = 1
-solution = nil
-while step < max do
-    range_sums = numbers.map.with_index { |num, i| {"#{i..i+step}" => numbers[i..i+step].sum}}
-    range_sums.each do |set|
-        if set.values.include?(wrong_number)
-            solution = set
-            break
-        end
-    end
-    step += 1
-end
-first, last = solution.keys[0].split('..').map(&:to_i)
-pp solution
-p numbers[first..last].min + numbers[first..last].max