Add day 1

.env-template

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+AOC_COOKIE=AOC_COOKIE

.gitignore

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+.env

Gemfile

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+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+gem "aoc_rb"

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    aoc_rb (0.2.5)
+      dotenv (~> 2.7.6)
+      httparty (~> 0.20.0)
+      nokogiri (~> 1.13.6)
+      rspec (~> 3.0)
+      thor (~> 1.2.1)
+    diff-lcs (1.5.0)
+    dotenv (2.7.6)
+    httparty (0.20.0)
+      mime-types (~> 3.0)
+      multi_xml (>= 0.5.2)
+    mime-types (3.4.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2023.0218.1)
+    multi_xml (0.6.0)
+    nokogiri (1.13.10-x86_64-linux)
+      racc (~> 1.4)
+    racc (1.6.2)
+    rspec (3.12.0)
+      rspec-core (~> 3.12.0)
+      rspec-expectations (~> 3.12.0)
+      rspec-mocks (~> 3.12.0)
+    rspec-core (3.12.2)
+      rspec-support (~> 3.12.0)
+    rspec-expectations (3.12.3)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.12.0)
+    rspec-mocks (3.12.6)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.12.0)
+    rspec-support (3.12.1)
+    thor (1.2.1)
+
+PLATFORMS
+  x86_64-linux
+
+DEPENDENCIES
+  aoc_rb
+
+BUNDLED WITH
+   2.3.7

bin/aoc

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+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'aoc' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+# THIS IS THE BIN FILE
+
+require "pathname"
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../../Gemfile",
+                                           Pathname.new(__FILE__).realpath)
+
+bundle_binstub = File.expand_path("../bundle", __FILE__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300) =~ /This file was generated by Bundler/
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+$LOAD_PATH.unshift File.expand_path("../..", __FILE__)
+
+require "rubygems"
+require "bundler/setup"
+
+# load Gem.bin_path("aoc_rb", "aoc")
+
+require 'aoc_rb/app'

challenges/2023/01/part_1.md

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+## --- Day 1: Trebuchet?! ---
+
+Something is wrong with global snow production, and you've been selected to take a look. The Elves have even given you a map; on it, they've used stars to mark the top fifty locations that are likely to be having problems.
+
+You've been doing this long enough to know that to restore snow operations, you need to check all **fifty stars** by December 25th.
+
+Collect stars by solving puzzles.  Two puzzles will be made available on each day in the Advent calendar; the second puzzle is unlocked when you complete the first.  Each puzzle grants **one star**. Good luck!
+
+You try to ask why they can't just use a weather machine ("not powerful enough") and where they're even sending you ("the sky") and why your map looks mostly blank ("you sure ask a lot of questions") and hang on did you just say the sky ("of course, where do you think snow comes from") when you realize that the Elves are already loading you into a trebuchet ("please hold still, we need to strap you in").
+
+As they're making the final adjustments, they discover that their calibration document (your puzzle input) has been **amended** by a very young Elf who was apparently just excited to show off her art skills. Consequently, the Elves are having trouble reading the values on the document.
+
+The newly-improved calibration document consists of lines of text; each line originally contained a specific **calibration value** that the Elves now need to recover. On each line, the calibration value can be found by combining the **first digit** and the **last digit** (in that order) to form a single **two-digit number**.
+
+For example:
+
+    1abc2
+    pqr3stu8vwx
+    a1b2c3d4e5f
+    treb7uchet
+
+In this example, the calibration values of these four lines are ``12``, ``38``, ``15``, and ``77``. Adding these together produces ``142``.
+
+Consider your entire calibration document. **What is the sum of all of the calibration values?**
+

challenges/2023/01/part_2.md

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+## --- Part Two ---
+
+Your calculation isn't quite right. It looks like some of the digits are actually **spelled out with letters**: ``one``, ``two``, ``three``, ``four``, ``five``, ``six``, ``seven``, ``eight``, and ``nine`` **also** count as valid "digits".
+
+Equipped with this new information, you now need to find the real first and last digit on each line. For example:
+
+    two1nine
+    eightwothree
+    abcone2threexyz
+    xtwone3four
+    4nineeightseven2
+    zoneight234
+    7pqrstsixteen
+
+In this example, the calibration values are ``29``, ``83``, ``13``, ``24``, ``42``, ``14``, and ``76``. Adding these together produces ``281``.
+
+**What is the sum of all of the calibration values?**
+

challenges/2023/01/solution.rb

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+# frozen_string_literal: true
+module Year2023
+  class Day01 < Solution
+    # @input is available if you need the raw data input
+    # Call `data` to access either an array of the parsed data, or a single record for a 1-line input file
+
+    NUMBERS = {
+      'one' => 1,
+      'two' => 2,
+      'three' => 3,
+      'four' => 4,
+      'five' => 5,
+      'six' => 6,
+      'seven' => 7,
+      'eight' => 8,
+      'nine' => 9
+    }
+
+    def part_1
+      data.map do |line|
+        digits = line.gsub(/[^0-9]/, '')
+        "#{digits[0]}#{digits[-1]}".to_i
+      end.sum
+    end
+
+    def part_2
+      data.map do |line|
+        matches = line.scan(/(?=([0-9]|#{NUMBERS.keys.join('|')}))/).flatten
+        "#{NUMBERS[matches.first] || matches.first}#{NUMBERS[matches.last] || matches.last}".to_i
+      end.sum
+    end
+
+    private
+      # Processes each line of the input file and stores the result in the dataset
+      # def process_input(line)
+      #   line.map(&:to_i)
+      # end
+
+      # Processes the dataset as a whole
+      # def process_dataset(set)
+      #   set
+      # end
+  end
+end

challenges/shared/solution.rb

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+# frozen_string_literal: true %>
+
+class Solution
+  def self.part_1(*input)
+    new(*input).part_1
+  end
+
+  def self.part_2(*input)
+    new(*input).part_2
+  end
+
+  def initialize(input)
+    @input = input
+  end
+
+  def data
+    @data ||= begin
+                processed = @input.lines(chomp: true).map do |line|
+                  process_input line
+                end
+
+                processed.length == 1 ? processed.first : process_dataset(processed)
+              end
+  end
+
+  private
+    def process_input(line)
+      line
+    end
+
+    def process_dataset(set)
+      set
+    end
+end

spec/2023/01/solution_spec.rb

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+# frozen_string_literal: true
+require 'spec_helper'
+
+RSpec.describe Year2023::Day01 do
+  let(:input) { File.read(File.join(File.dirname(__FILE__), "../../../challenges/2023/01/input.txt")) }
+
+  describe "part 1" do
+    let(:example_input) {
+      <<~EOF
+1abc2
+pqr3stu8vwx
+a1b2c3d4e5f
+treb7uchet
+      EOF
+    }
+
+    it "returns 142 for the example input" do
+      expect(described_class.part_1(example_input)).to eq(142)
+    end
+
+    it "returns nil for my input" do
+      expect(described_class.part_1(input)).to eq(55834)
+    end
+  end
+
+  describe "part 2" do
+    let(:example_input) {
+      <<~EOF
+two1nine
+eightwothree
+abcone2threexyz
+xtwone3four
+4nineeightseven2
+zoneight234
+7pqrstsixteen
+      EOF
+    }
+
+    it "returns nil for the example input" do
+      expect(described_class.part_2(example_input)).to eq(281)
+    end
+
+    it "returns nil for my input" do
+      expect(described_class.part_2(input)).to eq(53221)
+    end
+  end
+end

spec/spec_helper.rb

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+# frozen_string_literal: true
+
+Dir[File.join(File.dirname(__FILE__), "..", "challenges", "shared", "**", "*.rb")].each do |file|
+  require file
+end
+
+Dir[File.join(File.dirname(__FILE__), "..", "challenges", "20*", "**", "*.rb")].each do |file|
+  require file
+end
+
+RSpec.configure do |config|
+
+end