DebuggingArgumentErrorPart1.rb

#Run the code. Read the error message.

#Change the assigned value of sample_avg so that it does not throw an error.

def mean(numbers)
  sum = numbers.inject(:+)
  
  return sum / numbers.length
end

# This will throw an error. Change this line so that it works.
sample_avg = mean([5, 3, 6, 10])

#comment out the above code with your new solution
#in order to pass the method of mean, the parameter has to be an array. this change is made above to dismiss the error. 

DebuggingArgumentErrorPart2.rb

def mean(*numbers)
  sum = numbers.inject(:+)

  return sum / numbers.length
end

#Instead of changing the method invocation, change the definition.
#In other words, rewrite the method so that it can take any number of arguments.
sample_avg = mean(5, 3, 6, 10)

#comment out the above code with your new solution
#using splat allows us to define unlimited amount of arguments on the method

DebuggingTypeError.rb

#Ruby is a dynamically typed programming language, which means that you do not have to define the type of a variable when you assign it.

#Most of the time, this is a very Good Thing. Rubyists can use duck typing, which is a form of dynamic typing.

#In duck typing, one is concerned with just those aspects of an object that are used, rather than with the type of the object itself.
#Source: Wikipedia
#Sometimes, though, the objects our program receives are of a different type than the ones we expected it to receive. This is called a TypeError, and you will see them all over the place in Ruby programs. So get used to it.

#The goal of the code below is to produce an output string and a sorted array from an array input. There is at least one error in #this code. You must find it. You must fix it.


#def print_and_sort(array)
#  output_string = []

#  array.each do |element|
#    element = element.to_s
#    output_string << element
#  end

#  array = output_string
#  p array.sort
#end

#words = %w{ all i can say is that my life is pretty plain }
#words_with_nil = words.dup.insert(3, nil)
#mixed_array = ["2", 1, "5", 4, "3"]

#print_and_sort(words)
#print_and_sort(words_with_nil)
#print_and_sort(mixed_array)

#comment out the above code with your new solution

def print_and_sort(array)
  output_string = ""

  array.compact! 
  array.map!(&:to_s)
  p array.sort
  
end

words = %w{ all i can say is that my life is pretty plain }
words_with_nil = words.dup.insert(3, nil)
mixed_array = ["2", 1, "5", 4, "3"]

print_and_sort(words)
print_and_sort(words_with_nil)
print_and_sort(mixed_array)

#comment out the above code with your new solution
#delete the nil from the array
#then map all the elements in the array and change them into strings
#sort the array and print them out