avg.rb

#avg highest and lowest. take the highest and lowest out of array.
require 'pry-debugger'
require 'benchmark'
def special_avg(array)
  array.sort!
  array = remove_outliers(array)
  val =  array.reduce(:+) / (array.length)
  return val
end

def remove_outliers(array)
  max = array.max
  min = array.min
  array.reject!{|i| i == max || i == min }
end


puts special_avg( ( (1..1000000).to_a + (1..1000000).to_a  ) )

puts Benchmark.measure { ( (1..1000000).to_a + (1..1000000).to_a  ) }

avg_spec.rb

require 'rspec'
require 'pry-debugger'

require_relative 'avg'

describe "avg outlier function" do
  it "should calculate the avg" do
    avg_val = special_avg([3, 9, 15, 3, 9, 6, 6, 3, 15, 5])
    expect(avg_val).to eq 7
  end
end



# sample. other test cases, are for POSSIBLE invalid inputs (non integers) and for arrays with recurring values. empty array. large arrays.