minimum-ascii-delete-sum-for-two-strings

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Algorithms

Given two strings <code>s1</code> and&nbsp;<code>s2</code>, return the lowest ASCII sum of deleted characters to make two strings equal.

&nbsp;
Example 1:

<pre>
Input: s1 = &quot;sea&quot;, s2 = &quot;eat&quot;
Output: 231
Explanation: Deleting &quot;s&quot; from &quot;sea&quot; adds the ASCII value of &quot;s&quot; (115) to the sum.
Deleting &quot;t&quot; from &quot;eat&quot; adds 116 to the sum.
At the end, both strings are equal, and 115 + 116 = 231 is the minimum sum possible to achieve this.
</pre>

Example 2:

<pre>
Input: s1 = &quot;delete&quot;, s2 = &quot;leet&quot;
Output: 403
Explanation: Deleting &quot;dee&quot; from &quot;delete&quot; to turn the string into &quot;let&quot;,
adds 100[d] + 101[e] + 101[e] to the sum.
Deleting &quot;e&quot; from &quot;leet&quot; adds 101[e] to the sum.
At the end, both strings are equal to &quot;let&quot;, and the answer is 100+101+101+101 = 403.
If instead we turned both strings into &quot;lee&quot; or &quot;eet&quot;, we would get answers of 433 or 417, which are higher.
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= s1.length, s2.length &lt;= 1000</code></li>
	<li><code>s1</code> and <code>s2</code> consist of lowercase English letters.</li>
</ul>