arn-e

MAX_AGE = 120

class OrangeTree

  def initialize
    @height_total_inches = 0
    @age = 0
    @orange_count = 0
  end

arn-e

class NumbersToWords
  @@words = { 1=> "one",
             2=>"two",
             3=>"three",
             4=>"four",
             5=>"five",
             6=>"six",
             7=>"seven",
             8=>"eight",

arn-e

#binary search

def binary_search(item,array,min = 0,max = array.length, half = (min + max) / 2)
	return min if item == array[min]
	return -1 if (item < array[0] || item > array[array.length-1]) || (min == max - 1)
	item < array[half] ? binary_search(item,array,min,half) : binary_search(item,array,half,array.length)
end

test_array = (1..15).to_a
puts binary_search(13,test_array) == 12

arn-e

We couldn’t find that file to show.

arn-e

#Getting Started,1 
#Numbers,9 
#Letters,13
#Variables and Assignment,21
#Mixing It Up,25
#More About Methods,33

require 'csv'

class TableOfContents

arn-e

Benchmark.bmbm do |x|
  x.report('prime_factors') do
    100.times { prime_factors(9000) }
  end
  x.report('prime_factors_iterative') do
    100.times { prime_factors_iterative(9000) }
  end
end
#                               user     system      total        real
# prime_factors             0.010000   0.000000   0.010000 (  0.002087)

arn-e

def prime_factors_iterative(n, f = 2, factors = [])
  until n == f
    n % f == 0 ? (factors, n, f = factors.push(f), (n/f), 2) : (f += 1)
  end
  return factors.push(f)
end

arn-e

def prime_factors(n, factors = [], f = 2)
  return factors.push(f) if n == f
  n % f == 0 ? prime_factors(n / f, factors.push(f)) : prime_factors(n, factors, f + 1)
end

arn-e

# Description : Script to Return Remaining Days in the Year
# User puts in a date and gets the number of the day (e.g. day 1) and the number of days left in the year 

class DayOfYear
	def initialize
		@days_in_months = [31,28,31,30,31,30,31,31,30,31,30,31]
	end

	def date_info(date)
		return "days number : #{days_elapsed(date.month,date.day,date.year)}, days remaining in year : #{days_remaining(date.month,date.day,date.year)}"

arn-e

require 'benchmark'
@mod_256 = [true, true, false, false, true, false, false, false, false, true, false, false, false, false, false, false, true, true, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, true, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, false, false, false, false, true, true, false, false, true, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, true, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, false, false, false, false, false, true, false, false, true, false, false, false, false, true, false, false, false, false, false, false, true, true