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Re: counting elements using a hash

by CountZero (Bishop)
on Sep 23, 2012 at 07:12 UTC ( #995179=note: print w/replies, xml ) Need Help??

in reply to counting elements using a hash

You are missing the final semi-colon in your first line.

Also, you are using an alphanumeric search (which means "2" will come between "19" and "20"). You will want to use a numeric sort.

use Modern::Perl; my @numbers = map int(rand(100)), (1..1000); my %count; $count{$_}++ for @numbers; say "$_ occurs $count{$_} time(s)" for sort {$a <=> $b} keys %count;


A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James

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