match-substring-after-replacement

Match Substring After Replacement

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matchReplacement

You are given two strings <code>s</code> and <code>sub</code>. You are also given a 2D character array <code>mappings</code> where <code>mappings[i] = [oldi, newi]</code> indicates that you may perform the following operation any number of times:

<ul>
	<li>Replace a character <code>oldi</code> of <code>sub</code> with <code>newi</code>.</li>
</ul>

Each character in <code>sub</code> cannot be replaced more than once.

Return <code>true</code> if it is possible to make <code>sub</code> a substring of <code>s</code> by replacing zero or more characters according to <code>mappings</code>. Otherwise, return <code>false</code>.

A substring is a contiguous non-empty sequence of characters within a string.

&nbsp;
Example 1:

<pre>
Input: s = &quot;fool3e7bar&quot;, sub = &quot;leet&quot;, mappings = [[&quot;e&quot;,&quot;3&quot;],[&quot;t&quot;,&quot;7&quot;],[&quot;t&quot;,&quot;8&quot;]]
Output: true
Explanation: Replace the first &#39;e&#39; in sub with &#39;3&#39; and &#39;t&#39; in sub with &#39;7&#39;.
Now sub = &quot;l3e7&quot; is a substring of s, so we return true.</pre>

Example 2:

<pre>
Input: s = &quot;fooleetbar&quot;, sub = &quot;f00l&quot;, mappings = [[&quot;o&quot;,&quot;0&quot;]]
Output: false
Explanation: The string &quot;f00l&quot; is not a substring of s and no replacements can be made.
Note that we cannot replace &#39;0&#39; with &#39;o&#39;.
</pre>

Example 3:

<pre>
Input: s = &quot;Fool33tbaR&quot;, sub = &quot;leetd&quot;, mappings = [[&quot;e&quot;,&quot;3&quot;],[&quot;t&quot;,&quot;7&quot;],[&quot;t&quot;,&quot;8&quot;],[&quot;d&quot;,&quot;b&quot;],[&quot;p&quot;,&quot;b&quot;]]
Output: true
Explanation: Replace the first and second &#39;e&#39; in sub with &#39;3&#39; and &#39;d&#39; in sub with &#39;b&#39;.
Now sub = &quot;l33tb&quot; is a substring of s, so we return true.

</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= sub.length &lt;= s.length &lt;= 5000</code></li>
	<li><code>0 &lt;= mappings.length &lt;= 1000</code></li>
	<li><code>mappings[i].length == 2</code></li>
	<li><code>oldi != newi</code></li>
	<li><code>s</code> and <code>sub</code> consist of uppercase and lowercase English letters and digits.</li>
	<li><code>oldi</code> and <code>newi</code> are either uppercase or lowercase English letters or digits.</li>
</ul>

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