making-file-names-unique

Making File Names Unique

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getFolderNames

Given an array of strings <code>names</code> of size <code>n</code>. You will create <code>n</code> folders in your file system such that, at the <code>ith</code> minute, you will create a folder with the name <code>names[i]</code>.

Since two files cannot have the same name, if you enter a folder name that was previously used, the system will have a suffix addition to its name in the form of <code>(k)</code>, where, <code>k</code> is the smallest positive integer such that the obtained name remains unique.

Return an array of strings of length <code>n</code> where <code>ans[i]</code> is the actual name the system will assign to the <code>ith</code> folder when you create it.

&nbsp;
Example 1:

<pre>
Input: names = [&quot;pes&quot;,&quot;fifa&quot;,&quot;gta&quot;,&quot;pes(2019)&quot;]
Output: [&quot;pes&quot;,&quot;fifa&quot;,&quot;gta&quot;,&quot;pes(2019)&quot;]
Explanation: Let&#39;s see how the file system creates folder names:
&quot;pes&quot; --&gt; not assigned before, remains &quot;pes&quot;
&quot;fifa&quot; --&gt; not assigned before, remains &quot;fifa&quot;
&quot;gta&quot; --&gt; not assigned before, remains &quot;gta&quot;
&quot;pes(2019)&quot; --&gt; not assigned before, remains &quot;pes(2019)&quot;
</pre>

Example 2:

<pre>
Input: names = [&quot;gta&quot;,&quot;gta(1)&quot;,&quot;gta&quot;,&quot;avalon&quot;]
Output: [&quot;gta&quot;,&quot;gta(1)&quot;,&quot;gta(2)&quot;,&quot;avalon&quot;]
Explanation: Let&#39;s see how the file system creates folder names:
&quot;gta&quot; --&gt; not assigned before, remains &quot;gta&quot;
&quot;gta(1)&quot; --&gt; not assigned before, remains &quot;gta(1)&quot;
&quot;gta&quot; --&gt; the name is reserved, system adds (k), since &quot;gta(1)&quot; is also reserved, systems put k = 2. it becomes &quot;gta(2)&quot;
&quot;avalon&quot; --&gt; not assigned before, remains &quot;avalon&quot;
</pre>

Example 3:

<pre>
Input: names = [&quot;onepiece&quot;,&quot;onepiece(1)&quot;,&quot;onepiece(2)&quot;,&quot;onepiece(3)&quot;,&quot;onepiece&quot;]
Output: [&quot;onepiece&quot;,&quot;onepiece(1)&quot;,&quot;onepiece(2)&quot;,&quot;onepiece(3)&quot;,&quot;onepiece(4)&quot;]
Explanation: When the last folder is created, the smallest positive valid k is 4, and it becomes &quot;onepiece(4)&quot;.
</pre>

&nbsp;
Constraints:

<ul>
	<li><code>1 &lt;= names.length &lt;= 5 * 104</code></li>
	<li><code>1 &lt;= names[i].length &lt;= 20</code></li>
	<li><code>names[i]</code> consists of lowercase English letters, digits, and/or round brackets.</li>
</ul>

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