With the data structures you have and if this is a one time operation then a linear search is probably the best you can do. If you have the option of changing the way the port information is stored there are many ways to improve performance even for a one time search.
If you need to search multiple times for the same @range and for only small changes in @ports then taking the hit to transform the port map into a better structure, or at least caching the next untested port will help speed things up. In any case wrapping the information up in an object is likely to make it much easier to manage correctly.
If you want to provide typical use cases you may get a more focused answer.
True laziness is hard work
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||