# 1904. The Number of Full Rounds You Have Played ## Description A new online video game has been released, and in this video game, there are **15-minute** rounds scheduled every **quarter-hour** period. This means that at `HH:00`, `HH:15`, `HH:30` and `HH:45`, a new round starts, where `HH` represents an integer number from `00` to `23`. A **24-hour clock** is used, so the earliest time in the day is `00:00` and the latest is `23:59`. Given two strings `startTime` and `finishTime` in the format `"HH:MM"` representing the exact time you **started** and **finished** playing the game, respectively, calculate the **number of full rounds** that you played during your game session. * For example, if `startTime = "05:20"` and `finishTime = "05:59"` this means you played only one full round from `05:30` to `05:45`. You did not play the full round from `05:15` to `05:30` because you started after the round began, and you did not play the full round from `05:45` to `06:00` because you stopped before the round ended. If `finishTime` is **earlier** than `startTime`, this means you have played overnight (from `startTime` to the midnight and from midnight to `finishTime`). Return *the **number of full rounds** that you have played if you had started playing at* `startTime` *and finished at* `finishTime`. **Example 1:** ``` **Input:** startTime = "12:01", finishTime = "12:44" **Output:** 1 **Explanation:** You played one full round from 12:15 to 12:30. You did not play the full round from 12:00 to 12:15 because you started playing at 12:01 after it began. You did not play the full round from 12:30 to 12:45 because you stopped playing at 12:44 before it ended. ``` **Example 2:** ``` **Input:** startTime = "20:00", finishTime = "06:00" **Output:** 40 **Explanation:** You played 16 full rounds from 20:00 to 00:00 and 24 full rounds from 00:00 to 06:00. 16 + 24 = 40. ``` **Example 3:** ``` **Input:** startTime = "00:00", finishTime = "23:59" **Output:** 95 **Explanation:** You played 4 full rounds each hour except for the last hour where you played 3 full rounds. ``` **Constraints:** * `startTime` and `finishTime` are in the format `HH:MM`. * `00 <= HH <= 23` * `00 <= MM <= 59` * `startTime` and `finishTime` are not equal. ## ac ```java ```