# 1736. Latest Time by Replacing Hidden Digits

https://leetcode.com/problems/latest-time-by-replacing-hidden-digits

## Description

You are given a string `time` in the form of `hh:mm`, where some of the digits in the string are hidden (represented by `?`).

The valid times are those inclusively between `00:00` and `23:59`.

Return _the latest valid time you can get from_ `time` _by replacing the hidden_ _digits_.

**Example 1:**

```
**Input:** time = "2?:?0"
**Output:** "23:50"
**Explanation:** The latest hour beginning with the digit '2' is 23 and the latest minute ending with the digit '0' is 50.
```

**Example 2:**

```
**Input:** time = "0?:3?"
**Output:** "09:39"
```

**Example 3:**

```
**Input:** time = "1?:22"
**Output:** "19:22"
```

**Constraints:**

* `time` is in the format `hh:mm`.
* It is guaranteed that you can produce a valid time from the given string.

## ac

```java
```
