PWC 366, Task 2, Valid Times

PWC 366 Task 2, Valid Times Here we are at another Weekly Challenge, ticking away the moments that make up a dull day. Fritter and waste the hours in an off-hand way. Kicking around on a piece of ground in your home town, waiting for someone or something to show you the way. Here's a way. The Requirements Phase You are given a time in the form ‘HH:MM’. The earliest possible time is ‘00:00’ and the latest possible time is ‘23:59’. In the string time, the digits represented by the ‘?’ symbol are unknown, and must be replaced with a digit from 0 to 9. Write a script to return the count of different ways we can make it a valid time. Example 1 : Input : $time = "?2:34" , Output : 3 02:34, 12:34, 22:34 Example 2 : Input : $time = "?4:?0" , Output : 12 Combinations of hours 04 and 14, with minutes 00, 10, 20, 30, 40, 50 Example 3 : Input : $time = "??:??" , Output : 1440 Example 4 : Input : $time = "?3:45" , Output : 3 03:45, 13:45, 23:45 Example 5 : Input : $time = "2?:15" , Output : 4 20:15