hunj

def path_strip(input_file, domain, output_file)
  raise "domain must be string form" unless domain.is_a? String
  raise "invalid input file name" unless input_file.is_a? String
  raise "invalid output file name" unless output_file.is_a? String

  file = File.open(input_file, "r")
  data = file.read
  file.close
  data_lines = data.lines
  cleared_arr = []

hunj

# path_strip(input_file, domain, output_file)
# imports an xml file containing paths of the website's pages,
# strips all unnecessary strings except for the path of the pages.
## Parameters:
# +input_file+ name of the input xml file
# +domain+ the domain of the URL to exclude in the result
# +output_file+ name of the output file, ending in .csv (preferred)
def path_strip(input_file, domain, output_file)
  raise "domain must be string form" unless domain.is_a? String
  raise "invalid input file name" unless input_file.is_a? String

hunj

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

hunj

DESIRED_SIZE = 1073741824 # 1gb
FILE_NAME = "dummy" # name of the dummy file

dummy_file = File.new(FILE_NAME, "w")

while dummy_file.size < DESIRED_SIZE
  dummy_file.write([0,1].sample)
end

dummy_file.close

hunj

def perfect_number? number
  return number == divisors_of(number)
end

def divisors_of number 
  arr = []
  (1..number).each do |iter|
    if number % iter == 0
      arr << iter
    end

hunj

require 'csv'

# Data generation
@data = {}

(0..100).each do |i|
  @data[i] = {
    :age => Random.rand(18...80),
    :gender => Random.rand(0..1),
    :prescription_history => []

hunj

require 'benchmark'

the_number = 600_851_475_143

# monkeypatching
class Fixnum
  def prime? # O(n)
    (2..(self - 1)).each do |divisor|
      return false if self % divisor == 0
    end

hunj

from decimal import *

def compute_pi():
    pi = Decimal(3.0)
    curr_multiplier = Decimal(2)
    iteration = Decimal(0)
    load = Decimal(1)
    getcontext().prec = 6

    while 1:

hunj

Calculated pi:  3.1411426428303537942242780347543442930366295786973371671458932366545818227278409801225153144143017877234654331791473934241780222527815976997124640580072509063632954119264908113514189273659207400925115639454931866483310413801725215651956494561820227528441055131891486435804475559444930616327040880110013751718964870608826103262907863482935366920865108138517314664333041630203775471933991748968621077634704338042255281910238779847480935116889611201400175021877734716839604950618827353419177397174646830853856732091511438929866233279159894986873359169896237029628703587948493561695211901487685960745093136642080260032504063007875984498062257782222777847230903862982872859107388423552944118014751843980497562195274409301162645330666333291661457682210276284535566945868233529191148893611701462682835354419302412801600200025003125390673834229278659832479059882485310663832979122390298787348418552319039879984998124765595699462432804100512564070508813601700212526565820727590948868608576072009001125140642580322540

hunj

import inspect

frame = inspect.currentframe()
args, _, _, values = inspect.getargvalues(frame)
print('function name "%s"' % inspect.getframeinfo(frame)[2])
for i in args:
    print("    %s = %s" % (i, values[i]))