w1d3

debugging exercise

def average(numbers)
  sum = 0
  numbers.each do |num|
    sum += num
  end
  if numbers.empty? || numbers.nil?
    0
  else
    sum / numbers.size
  end
end

## TEST HELPER METHOD
def test_average(array=nil)
  if array != nil
    array = array.compact
    print "avg of #{array.inspect}:"
    result = average(array)
    puts result
  else
    puts "There is no array here: 0"
  end
end

## TEST CODE
test_average([4,5,6]) # => 5
test_average([15,5,10]) # => 10

# Should treat string like number
test_average([15,5,10]) # => 5

# Should show decimal value
test_average([10.0,5]) # => 7.5 instead of just 7

########## Empty set should return 0 as average, not throw an error
test_average([]) # => 0

########## Non-existent set should return 0
test_average() # => 0

########### BONUS: Should ignore nils in the set
test_average([9,6,nil,3]) # => 6