To train for an upcoming marathon, Johnny goes on one long-distance run each Saturday. He wants to track how often the number of miles he runs exceeds the previous Saturday. This is called a progress day.
Create a function that takes in a list of miles run every Saturday and returns Johnny's total number of progress days.
progress_days([3, 4, 1, 2]) ➞ 2
# There are two progress days, (3->4) and (1->2)
progress_days([10, 11, 12, 9, 10]) ➞ 3
progress_days([6, 5, 4, 3, 2, 9]) ➞ 1
progress_days([9, 9]) ➞ 0
Running the same number of miles as last week does not count as a progress day.