0681. Next Closest Time
https://leetcode.com/problems/next-closest-time
Description
Given a time
represented in the format "HH:MM"
, form the next closest time by reusing the current digits. There is no limit on how many times a digit can be reused.
You may assume the given input string is always valid. For example, "01:34"
, "12:09"
are all valid. "1:34"
, "12:9"
are all invalid.
Example 1:
**Input:** time = "19:34"
**Output:** "19:39"
**Explanation:** The next closest time choosing from digits **1**, **9**, **3**, **4**, is **19:39**, which occurs 5 minutes later.
It is not **19:33**, because this occurs 23 hours and 59 minutes later.
Example 2:
**Input:** time = "23:59"
**Output:** "22:22"
**Explanation:** The next closest time choosing from digits **2**, **3**, **5**, **9**, is **22:22**.
It may be assumed that the returned time is next day's time since it is smaller than the input time numerically.
Constraints:
time.length == 5
time
is a valid time in the form"HH:MM"
.0 <= HH < 24
0 <= MM < 60
ac
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