Problems

39. Measuring function execution time

Write a function that can measure the execution time of a function (with any number of arguments) in any required duration (such as seconds, milliseconds, microseconds, and so on).

40. Number of days between two dates

Write a function that, given two dates, returns the number of days between the two dates. The function should work regardless of the order of the input dates.

41. Day of the week

...