find the median of a list of numbers in ruby

To find the median of a list of numbers in Ruby, you can perform the following steps:

1. Sort the list of numbers in ascending order.
2. Check if the list has an odd or even number of elements:
   • If the list has an odd number of elements, the median is the middle element.
   • If the list has an even number of elements, the median is the average of the middle two elements.
3. Return the median value.

Here's the code that implements this algorithm:

main.rb
def median(numbers)
  sorted = numbers.sort
  size = sorted.size
  if size.odd?
    sorted[size / 2]
  else
    (sorted[size / 2 - 1] + sorted[size / 2]) / 2.0
  end
end
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You can use this method by passing in an array of numbers:

main.rb
numbers = [1, 2, 3, 4, 5]
puts median(numbers) # Output: 3

numbers = [1, 2, 3, 4, 5, 6]
puts median(numbers) # Output: 3.5
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