<h2><a href="https://leetcode.com/problems/move-pieces-to-obtain-a-string/">2337. Move Pieces to Obtain a String</a></h2><h3>Medium</h3><hr><div><p>You are given two strings <code>start</code> and <code>target</code>, both of length <code>n</code>. Each string consists <strong>only</strong> of the characters <code>'L'</code>, <code>'R'</code>, and <code>'_'</code> where:</p>

<ul>

<li>The characters <code>'L'</code> and <code>'R'</code> represent pieces, where a piece <code>'L'</code> can move to the <strong>left</strong> only if there is a <strong>blank</strong> space directly to its left, and a piece <code>'R'</code> can move to the <strong>right</strong> only if there is a <strong>blank</strong> space directly to its right.</li>

<li>The character <code>'_'</code> represents a blank space that can be occupied by <strong>any</strong> of the <code>'L'</code> or <code>'R'</code> pieces.</li>

</ul>

<p>Return <code>true</code> <em>if it is possible to obtain the string</em> <code>target</code><em> by moving the pieces of the string </em><code>start</code><em> <strong>any</strong> number of times</em>. Otherwise, return <code>false</code>.</p>

<p>&nbsp;</p>

<p><strong class="example">Example 1:</strong></p>

<pre><strong>Input:</strong> start = "_L__R__R_", target = "L______RR"

<strong>Output:</strong> true

<strong>Explanation:</strong> We can obtain the string target from start by doing the following moves:

- Move the first piece one step to the left, start becomes equal to "<strong>L</strong>___R__R_".

- Move the last piece one step to the right, start becomes equal to "L___R___<strong>R</strong>".

- Move the second piece three steps to the right, start becomes equal to "L______<strong>R</strong>R".

Since it is possible to get the string target from start, we return true.

</pre>

<p><strong class="example">Example 2:</strong></p>

<pre><strong>Input:</strong> start = "R_L_", target = "__LR"

<strong>Output:</strong> false

<strong>Explanation:</strong> The 'R' piece in the string start can move one step to the right to obtain "_<strong>R</strong>L_".

After that, no pieces can move anymore, so it is impossible to obtain the string target from start.

</pre>

<p><strong class="example">Example 3:</strong></p>

<pre><strong>Input:</strong> start = "_R", target = "R_"

<strong>Output:</strong> false

<strong>Explanation:</strong> The piece in the string start can move only to the right, so it is impossible to obtain the string target from start.</pre>

<p>&nbsp;</p>

<p><strong>Constraints:</strong></p>

<ul>

<li><code>n == start.length == target.length</code></li>

<li><code>1 &lt;= n &lt;= 10⁵</code></li>

<li><code>start</code> and <code>target</code> consist of the characters <code>'L'</code>, <code>'R'</code>, and <code>'_'</code>.</li>

</ul>

</div>