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@jah2488
Created February 20, 2012 19:29
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Embed.ly Code Challenge
#! /usr/bin/env ruby
# Part 1
found = false
$num = 0
def calc_num(num)
i = num - 1
new_num = num
while i > 0 do
new_num = new_num * i
i -= 1
end
return new_num
end
def digits_summed(calc)
i = 0
calc = calc.to_s
calc_sum = 0
puts "calc = #{calc}"
while i < calc.length do
calc_sum += calc[i].to_i
i += 1
end
puts "R(n) of n! of #{calc} = #{calc_sum} (n = #{$num})"
return calc_sum.to_i
end
until found
calc = calc_num($num)
puts "n = #{$num} n! = #{calc}"
sum = digits_summed(calc)
found = true if sum == 8001
$num += 1
end
#! /usr/bin/env ruby
# Part 2
require 'open-uri'
require 'nokogiri'
require 'pry'
doc = Nokogiri::HTML(open('http://apply.embed.ly/static/data/2.html'))
article = doc.css('article').to_html
$p_array = []
def get_depth(node, depth=1)
if node.parent.name == "article"
depth += 1
return depth
else
get_depth(node.parent, (depth += 1))
end
end
def check_children(node)
if node.children.length > 0
for children in node.children
traverse_tree(children)
end
end
end
def traverse_tree(node)
if node.name == "p"
if node.parent.name == "article"
$p_array << 1
else
$p_array.push(get_depth(node))
end
else
check_children(node)
end
end
doc.css('article').each do |p|
for node in p.children do
traverse_tree(node)
end
end
def get_SD(data)
#Calculate The Mean
sum = data.inject(:+)
mean = sum / data.length
#Copy Array against Mean
calc_array = data.each {|n| (n - mean)**2 }
#Average the new array
nsum = calc_array.inject(:+)
nmean = nsum / calc_array.length
#Take the Square root
return Math.sqrt(nmean)
end
print $p_array
puts ""
puts get_SD($p_array)
#! /usr/bin/env ruby
# Part 3
given_text = {unique_words: 900, highest_word: 2520}
x = 2520
i = 1
$frq = []
while i < given_text[:unique_words] do
$frq.push(x/i)
i+=1
end
text_length = $frq.inject(:+)
puts text_length
word_count = 0
pos = 0
print $frq
half_length = (text_length/2)
puts half_length
until word_count > half_length do
word_count += $frq[pos]
puts "word count #{word_count} with array pos #{pos}"
pos += 1
end
puts "Half of Text Lenght: #{text_length/2}, word_cound: #{word_count}, used #{pos} words."
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