Hi,
Thanks for the encouraging comments. However. I was not thinking in those very high level complex terms. I just tried to keep it simple. I have not studied algorithms. May be in future I will be able to write this using a cool complex algorithm. Here's how I thought about it.
Before writing this script I thought its better to keep it simple so that if I get a large array, then checking an element, say x with the next and previous could be computationally intensive. I will Google about the log n stuff and try to understand it.
Thinkpad T430 with Ubuntu 16.04.2 running perl 5.24.1 thanks to plenv!!
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