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def count_between(array, lower_bound, upper_bound)
if array.empty?
return 0
end
array.each do |num|
if num >= lower_bound && num <= upper_bound
return num
else
return 0
@kenrett
kenrett / gist:5016284
Created February 22, 2013 20:21
Count_between
def count_between(array, lower_bound, upper_bound)
if array.empty?
return 0
end
counter = 0
array.select { |num| counter += 1 if num >= lower_bound && num <= upper_bound }
end
counter
@kenrett
kenrett / gist:5018587
Created February 23, 2013 05:27
mode
Exercise: Calculating the array mode
Write a method mode which takes an Array of numbers as its input and returns an Array of the most frequent values.
If there's only one most-frequent value, it returns a single-element Array.
For example,
mode([1,2,3,3]) # => [3]
mode([4.5, 0, 0]) # => [0]
mode([1.5, -1, 1, 1.5]) # => [1.5]
def times_table(rows)
if rows == 0
return false
end
array = []
counter = 1
while counter <= rows
1.upto(rows) do |i|
array << i*counter
end
def factorial(n)
if n == 0
return 1
end
counter = 0
array = []
while n >= counter
n.times do |i|
array << i *= (n-counter)
end
def mode(array)
a = array.inject(Hash.new(0)) { |key, value| key[value] += 1; key }
array.sort_by { |value| a[value] }.last
end
@kenrett
kenrett / gist:5130538
Last active December 14, 2015 18:38
class GuessingGame
class GuessingGame
def initialize(answer)
@answer = answer
end
def guess(g)
@guess = g
if @answer < @guess
return :high
end

Instructions:

  1. Download this application skeleton.
  2. Convert the app to use AJAX.
  3. Add any files you changed to your gist and submit your code.
/* Here is your chance to take over Socrates!
Spend 10 minutes on each of the following hacks to the socrates website.
Enter them in the console to make sure it works and then save
your results here.
Choose a new pair for each. Add your names to the section you complete.
*/