pdxwolfy

# frozen_string_literal: true
#
# Copyright (c) 2016 Pete Hanson

class Hex
  HEX_TO_I = { 'a' => 10, 'b' => 11, 'c' => 12,
               'd' => 13, 'e' => 14, 'f' => 15 }.freeze

  def initialize(hex_number_string)
    @hex_number = hex_number_string

pdxwolfy

# frozen_string_literal: true
#
# Copyright (c) 2016 Pete Hanson

def number_list_to_string(list)
  list.map(&:to_s).join ''
end

def lowest_number(number_list)
  number_list.permutation

pdxwolfy

# frozen_string_literal: true
#
# Copyright (c) 2016 Pete Hanson

def lowest_number(number_list)
  number_list.map(&:to_s)
             .permutation
             .map(&:join)
             .map(&:to_i)
             .min

pdxwolfy

# frozen_string_literal: true
#
# Copyright (c) 2016 Pete Hanson

def smash(string)
  string.each_char.select { |char| char =~ /\A[a-z]\Z/i }.join ' '
end

puts smash('Hello, world!') # -> H e l l o w o r l d

pdxwolfy

text = <<eof
Then Almitra spoke again and said, "And what of Marriage, master?" And he answered saying: You were born together, and together you shall be forevermore. You shall be together when white wings of death scatter your days. Aye, you shall be together even in the silent memory of God. But let there be spaces in your togetherness, And let the winds of the heavens dance between you. Love one another but make not a bond of love: Let it rather be a moving sea between the shores of your souls. Fill each other's cup but drink not from one cup. Give one another of your bread but eat not from the same loaf. Sing and dance together and be joyous, but let each one of you be alone, Even as the strings of a lute are alone though they quiver with the same music. Give your hearts, but not into each other's keeping. For only the hand of Life can contain your hearts. And stand together, yet not too near together: For the pillars of the temple stand apart, And the oak tree and the cypress grow not in each other's sha

pdxwolfy

# frozen_string_literal: true
#
# Copyright (c) 2016 Pete Hanson

require 'minitest/autorun'

def lowest_number(number_list)
  number_list.map(&:to_s).sort do |a, b|
    if a.start_with?(b)
      a[b.size..-1] <=> b

pdxwolfy

#!/usr/bin/env ruby -w
# Copyright (c) 2016 Pete Hanson
# frozen_string_literal: true

class Fibonacci
  def self.nth n_th
    raise ArgumentError, 'n_th must be >= 1' unless n_th >= 1

    @fib = [1, 1]
    next_to_last = @fib.first

pdxwolfy

OMMAIZE = %r{
  (\d)      # need at least one digit before each group of 3
  (\d\d\d)  # 3 digits in a row
  (\D)      # decimal point or comma
}x

def to_currency amount_as_string
  rounded_amount = round_float_as_string amount_as_string
  amount_with_commas = insert_commas! rounded_amount
  "$#{amount_with_commas}"

pdxwolfy

#!/usr/bin/env ruby
# Copyright (c) 2016 Pete Hanson
# frozen_string_literal: true
# :reek:UtilityFunction: { exclude: %w(largest_multiple) }

NUMBER = %(
  73167176531330624919225119674426574742355349194934
  96983520312774506326239578318016984801869478851843
  85861560789112949495459501737958331952853208805511
  12540698747158523863050715693290963295227443043557

pdxwolfy

class Triangle
  attr_reader :rows

  def initialize height
    factorial = [1]
    1.upto(height).each { |n| factorial << n * factorial.last }

    @rows = 0.upto(height - 1).map do |row|
      0.upto(row).map { |seq| factorial[row] / (factorial[seq] * factorial[row - seq]) }
    end