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Practice Makes Perfect

Great work! You’ve covered a lot in these exercises. Last but not least, let’s write a function to find the median of a list.

The median is the middle number in a sorted sequence of numbers.

Finding the median of [7, 12, 3, 1, 6] would first consist of sorting the sequence into [1, 3, 6, 7, 12] and then locating the middle value, which would be 6.

If you are given a sequence with an even number of elements, you must average the two elements surrounding the middle.

For example, the median of the sequence [7, 3, 1, 4] is 3.5, since the middle elements after sorting the list are 3 and 4 and (3 + 4) / (2.0) is 3.5.

You can sort the sequence using the sorted() function, like so:

sorted([5, 2, 3, 1, 4]) [1, 2, 3, 4, 5]



Write a function called median that takes a list as an input and returns the median value of the list. For example: median([1, 1, 2]) should return 1.

  • The list can be of any size and the numbers are not guaranteed to be in any particular order. Make sure to sort it!
  • If the list contains an even number of elements, your function should return the average of the middle two.
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