reformat-date

Algorithms

Reformat Date

给你一个字符串&nbsp;<code>date</code>&nbsp;，它的格式为&nbsp;<code>Day Month Year</code>&nbsp;，其中：

<ul>
	<li><code>Day</code>&nbsp;是集合&nbsp;<code>{&quot;1st&quot;, &quot;2nd&quot;, &quot;3rd&quot;, &quot;4th&quot;, ..., &quot;30th&quot;, &quot;31st&quot;}</code>&nbsp;中的一个元素。</li>
	<li><code>Month</code>&nbsp;是集合&nbsp;<code>{&quot;Jan&quot;, &quot;Feb&quot;, &quot;Mar&quot;, &quot;Apr&quot;, &quot;May&quot;, &quot;Jun&quot;, &quot;Jul&quot;, &quot;Aug&quot;, &quot;Sep&quot;, &quot;Oct&quot;, &quot;Nov&quot;, &quot;Dec&quot;}</code>&nbsp;中的一个元素。</li>
	<li><code>Year</code>&nbsp;的范围在 ​<code>[1900, 2100]</code>&nbsp;之间。</li>
</ul>

请你将字符串转变为&nbsp;<code>YYYY-MM-DD</code>&nbsp;的格式，其中：

<ul>
	<li><code>YYYY</code>&nbsp;表示 4 位的年份。</li>
	<li><code>MM</code>&nbsp;表示 2 位的月份。</li>
	<li><code>DD</code>&nbsp;表示 2 位的天数。</li>
</ul>

&nbsp;

示例 1：

<pre>输入：date = &quot;20th Oct 2052&quot;
输出：&quot;2052-10-20&quot;
</pre>

示例 2：

<pre>输入：date = &quot;6th Jun 1933&quot;
输出：&quot;1933-06-06&quot;
</pre>

示例 3：

<pre>输入：date = &quot;26th May 1960&quot;
输出：&quot;1960-05-26&quot;
</pre>

&nbsp;

提示：

<ul>
	<li>给定日期保证是合法的，所以不需要处理异常输入。</li>
</ul>

转变日期格式

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reformatDate

Given a <code>date</code> string in the form&nbsp;<code>Day Month Year</code>, where:

<ul>
	<li><code>Day</code>&nbsp;is in the set <code>{&quot;1st&quot;, &quot;2nd&quot;, &quot;3rd&quot;, &quot;4th&quot;, ..., &quot;30th&quot;, &quot;31st&quot;}</code>.</li>
	<li><code>Month</code>&nbsp;is in the set <code>{&quot;Jan&quot;, &quot;Feb&quot;, &quot;Mar&quot;, &quot;Apr&quot;, &quot;May&quot;, &quot;Jun&quot;, &quot;Jul&quot;, &quot;Aug&quot;, &quot;Sep&quot;, &quot;Oct&quot;, &quot;Nov&quot;, &quot;Dec&quot;}</code>.</li>
	<li><code>Year</code>&nbsp;is in the range <code>[1900, 2100]</code>.</li>
</ul>

Convert the date string to the format <code>YYYY-MM-DD</code>, where:

<ul>
	<li><code>YYYY</code> denotes the 4 digit year.</li>
	<li><code>MM</code> denotes the 2 digit month.</li>
	<li><code>DD</code> denotes the 2 digit day.</li>
</ul>

&nbsp;
Example 1:

<pre>
Input: date = &quot;20th Oct 2052&quot;
Output: &quot;2052-10-20&quot;
</pre>

Example 2:

<pre>
Input: date = &quot;6th Jun 1933&quot;
Output: &quot;1933-06-06&quot;
</pre>

Example 3:

<pre>
Input: date = &quot;26th May 1960&quot;
Output: &quot;1960-05-26&quot;
</pre>

&nbsp;
Constraints:

<ul>
	<li>The given dates are guaranteed to be valid, so no error handling is necessary.</li>
</ul>