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Latest Time You Can Obtain After Replacing Characters

You are given a string s representing a 12-hour format time where some of the digits (possibly none) are replaced with a "?".

You are given a string s representing a 12-hour format time where some of the digits (possibly none) are replaced with a "?".

12-hour times are formatted as "HH:MM", where HH is between 00 and 11, and MM is between 00 and 59. The earliest 12-hour time is 00:00, and the latest is 11:59.

You have to replace all the "?" characters in s with digits such that the time we obtain by the resulting string is a valid 12-hour format time and is the latest possible.

Return the resulting string.

Latest Time You Can Obtain After Replacing Characters diagram

Example 1

Input: s = "1?:?4"

Output: "11:54"

Explanation: The latest 12-hour format time we can achieve by replacing "?" characters is "11:54" .

Example 2

Input: s = "0?:5?"

Output: "09:59"

Explanation: The latest 12-hour format time we can achieve by replacing "?" characters is "09:59" .

Constraints

  • s.length == 5
  • s[2] is equal to the character ":".
  • All characters except s[2] are digits or "?" characters.
  • The input is generated such that there is at least one time between "00:00" and "11:59" that you can obtain after replacing the "?" characters.

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