Write a method that returns the time difference, in minutes, between two times given in 24 hour format for the same day. The first time is 'hrs1':'min1' and the second time is 'hrs2':'min2'. The time difference is how far apart those two times are, in minutes. For example: 5:15 and 5:45 are 30 minutes apart. 2:00 and 14:00 are 12 hours apart, but that is 720 minutes apart. The difference between times is the same no matter the order. So 5:15 and 5:45 are 30 minutes apart, but so are 5:45 and 5:15. Look at the test data for examples. Remember, this is using 24 hour time, so 1:00 PM is 13:00, and 2:00 PM is 14:00.