Re: get next higher number

Is this a homework question? If so, you should tell us that. You will still get help and we will understand how to better help you.

If this is not a homework question: Where do these numbers come from? What do they represent? How many numbers could there be? What is the maximum range of the numbers? How important is speed of calculation vs storage space? - Yes, that is a complicated question, but this is a common programming tradeoff. Knowing the answers to those basic questions and the overall context of your application would, with a high probability, lead to a more efficient solution and a "better" answer.

You wrote; "I prefer not to use any other functions or modules." Well, if(looks_like_number($row) calls a function that is not shown in your code.

Update: I don't see any Print statement in the original code. If there is no output, then any calculations are meaningless.

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Re^2: get next higher number by AnomalousMonk (Archbishop) on Jun 11, 2018 at 22:16 UTC
"I prefer not to use any other functions or modules." Yes, this does carry the stink of homework. Give a man a fish: `<%-{-{-{-<`	[reply] [d/l]
Re^3: get next higher number by ovedpo15 (Pilgrim) on Jun 12, 2018 at 06:30 UTC
Nope its a task I was given at work. `looks_like_number` is already used a function in the code so I can use it, but prefer not to add additional modules and functions so I won't need to install them. P.S which university course teaches Perl in 2018? thank you for your time.	[reply]
Re^4: get next higher number by hippo (Archbishop) on Jun 12, 2018 at 07:48 UTC
which university course teaches Perl in 2018? The University of Missouri-St. Louis for one. Homework is not limited to university students anyway.	[reply]