# Compute and display the median of a collection of values entered by the
# user.

# Create a new, empty list
data = []

# Read the first value from the user
value = input("Enter a value (blank line to quit): ")

# While the input is not the empty string
while value != "":
  # Convert the input entered by the user from a string to a float
  value = float(value)

  # Insert the value at the front of the list
  data.insert(0, value)

  # Read the next input from the user
  value = input("Enter the next value (blank line to quit): ")

# Sort the list
data.sort()

# If no values were entered
if len(data) == 0:
  print("No values were entered.")
# If the length of the list is odd
elif len(data) % 2 == 1:
  # Compute the median as the middle element in the list
  median = data[len(data) // 2]

  # Display the result
  print("The median of those values is", median)
else:
  # Compute the median as the average of the middle two elements
  median = (data[len(data) // 2] + data[len(data) // 2 - 1]) / 2

  # Display the result
  print("The median of those values is", median)