1507. Reformat Date

https://leetcode.com/problems/reformat-date

Description

Given a date string in the form Day Month Year, where:

• Day is in the set {"1st", "2nd", "3rd", "4th", ..., "30th", "31st"}.

• Month is in the set {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"}.

• Year is in the range [1900, 2100].

Convert the date string to the format YYYY-MM-DD, where:

• YYYY denotes the 4 digit year.

• MM denotes the 2 digit month.

• DD denotes the 2 digit day.

Example 1:

**Input:** date = "20th Oct 2052"
**Output:** "2052-10-20"

Example 2:

**Input:** date = "6th Jun 1933"
**Output:** "1933-06-06"

Example 3:

**Input:** date = "26th May 1960"
**Output:** "1960-05-26"

Constraints:

• The given dates are guaranteed to be valid, so no error handling is necessary.

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