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Vitor Oliveira 2021-04-14 16:39:13 -07:00 committed by GitHub
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46
maths/average_median.rb
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@ -2,18 +2,17 @@
# Reference: https://dev.to/colerau/how-to-find-the-median-and-mean-of-an-array-in-ruby-4f04 # Reference: https://dev.to/colerau/how-to-find-the-median-and-mean-of-an-array-in-ruby-4f04
module AverageMedian module AverageMedian
def self.average_median(n, *array) def self.average_median(n, *array)
if n.instance_of? Integer if n.instance_of? Integer
if n == array.size if n == array.size
array.sort array.sort
if array.size%2 == 0 if array.size % 2 == 0
mid_element_1 = array.size/2 mid_element_1 = array.size/2
mid_element_2 = mid_element_1 + 1 mid_element_2 = mid_element_1 + 1
puts "The average median of the following elements #{array} is #{(array[mid_element_1-1] + array[mid_element_2-1])/2}." puts "The average median of the following elements #{array} is #{(array[mid_element_1 - 1] + array[mid_element_2 - 1]) / 2}."
else else
mid_element = (array.size + 1)/2 mid_element = (array.size + 1) / 2
puts "The average median of the following elements #{array} is #{array[mid_element-1]}." puts "The average median of the following elements #{array} is #{array[mid_element - 1]}."
end end
else else
puts "Provide the required #{n} elements properly!" puts "Provide the required #{n} elements properly!"
@ -26,13 +25,36 @@ module AverageMedian
end end
end end
#
# Valid inputs # Valid inputs
AverageMedian.average_median(2, 3, 1) #
AverageMedian.average_median(5, 1, 2, 3, 4, 5)
AverageMedian.average_median(3, 2, 2, 2)
AverageMedian.average_median(1, 5)
puts AverageMedian.average_median(2, 3, 1)
# The average median of the following elements [3, 1] is 2.
puts AverageMedian.average_median(5, 1, 2, 3, 4, 5)
# The average median of the following elements [1, 2, 3, 4, 5] is 3.
puts AverageMedian.average_median(3, 2, 2, 2)
# The average median of the following elements [2, 2, 2] is 2.
puts AverageMedian.average_median(1, 5)
# The average median of the following elements [5] is 5.
#
# Invalid inputs # Invalid inputs
AverageMedian.average_median(2, 3, 1, 5) #
AverageMedian.average_median(2, 3, "a")
AverageMedian.average_median("a", 1, 2) puts AverageMedian.average_median(2, 3, 1, 5)
# Provide the required 2 elements properly!
puts AverageMedian.average_median(2, 3, "a")
# Traceback (most recent call last):
# 4: from /Users/voliveira/.rvm/rubies/ruby-2.7.0/bin/irb:23:in `<main>'
# 3: from /Users/voliveira/.rvm/rubies/ruby-2.7.0/bin/irb:23:in `load'
# 2: from /Users/voliveira/.rvm/rubies/ruby-2.7.0/lib/ruby/gems/2.7.0/gems/irb-1.2.1/exe/irb:11:in `<top (required)>'
# 1: from (irb):30
# NameError (undefined local variable or method `verageMedian' for main:Object)
puts AverageMedian.average_median("a", 1, 2)
# Error: Please provide number only!