kaiguogit

require 'benchmark'

# Sort the array from lowest to highest
def sort(arr)
  #bubble sort
  return arr if arr.length <= 1
  sorted = true
  while sorted
   sorted = false
   (arr.length-1).times do |i|

kaiguogit

# Save this file to your computer so you can run it 
# via the command line (Terminal) like so:
#   $ ruby shakil_the_dog.rb
#
# Your method should wait for user input, which corresponds
# to you saying something to your dog (named Shakil).
 
# You'll probably want to write other methods, but this 
# encapsulates the core dog logic
def shakil_the_dog

kaiguogit

# must be baller and either furnished or rent cheaper than 2100
def rent?(furnished, rent, baller)
 baller && (furnished || rent < 2100)
end

###
# Add your "test" ("driver") code below in order to "test drive" (run) your method above...
# The test code will call the method with different permutations of options and output the result each time.
# This way, you will be able to run the renter.rb file from the CLI and look at the output of your "tests" to validate if the method works.
# Without the test code, it will be hard for you to know if this method is working as it should or not.

kaiguogit

def fizzbuzz(startnumber,endnumber)
  #check input for Fixnum
  if !(startnumber.is_a?(Fixnum) && endnumber.is_a?(Fixnum))
    puts "invalid input"
    return nil
  end

  #check start number is smaller than end number
  if startnumber > endnumber
    puts "Start number #{startnumber} is greater than end number #{endnumber}, reverting the loop"

kaiguogit

# Find the maximum 
def maximum(arr)
  arr.inject(arr[0]) do |sum,a| 
    a > sum ? a : sum
  end
end

# expect it to return 42 below
result = maximum([2, 42, 22, 02])
puts "max of 2, 42, 22, 02 is: #{result}"