The Number of Full Rounds You Have Played
You are participating in an online chess tournament. There is a chess round that starts every 15 minutes. The first round of the day starts at 00:00, and after every 15 minutes, a new round starts.
- For example, the second round starts at
00:15, the fourth round starts at00:45, and the seventh round starts at01:30.
You are given two strings loginTime and logoutTime where:
loginTimeis the time you will login to the game.logoutTimeis the time you will logout from the game.
If logoutTime is earlier than loginTime, this means you have played from loginTime to midnight and from midnight to logoutTime.
Return the number of full chess rounds you have played in the tournament.
Note: All the given times follow the 24-hour clock. That means the first round of the day starts at 00:00 and the last round of the day starts at 23:45.
Example 1
Input
loginTime = "09:31", logoutTime = "10:14"Output
1You played one full round from 09:45 to 10:00, while the adjacent rounds were incomplete because you logged in after one began and logged out before the next ended.
Example 2
Input
loginTime = "21:30", logoutTime = "03:00"Output
22You played 10 full rounds from 21:30 to 00:00 and 12 full rounds from 00:00 to 03:00, for a total of 22.
Constraints
loginTimeandlogoutTimeare in the formathh:mm.00 <= hh <= 2300 <= mm <= 59loginTimeandlogoutTimeare not equal.