public class Solution
extends Object
2224 - Minimum Number of Operations to Convert Time\.
Easy
You are given two strings `current` and `correct` representing two **24-hour times**.
24-hour times are formatted as `"HH:MM"`, where `HH` is between `00` and `23`, and `MM` is between `00` and `59`. The earliest 24-hour time is `00:00`, and the latest is `23:59`.
In one operation you can increase the time `current` by `1`, `5`, `15`, or `60` minutes. You can perform this operation **any** number of times.
Return _the **minimum number of operations** needed to convert_ `current` _to_ `correct`.
**Example 1:**
**Input:** current = "02:30", correct = "04:35"
**Output:** 3
**Explanation:**
We can convert current to correct in 3 operations as follows:
- Add 60 minutes to current. current becomes "03:30".
- Add 60 minutes to current. current becomes "04:30".
- Add 5 minutes to current. current becomes "04:35".
It can be proven that it is not possible to convert current to correct in fewer than 3 operations.
**Example 2:**
**Input:** current = "11:00", correct = "11:01"
**Output:** 1
**Explanation:** We only have to add one minute to current, so the minimum number of operations needed is 1.
**Constraints:**
* `current` and `correct` are in the format `"HH:MM"`
* `current <= correct`