Dear Monks
How do I select a key from a hash randomly without converting to an array?. The important thing is that the randomness should take care of frequncy of the keys which is provided by value in the hash. 

$hash->{a} = 30;
$hash->{b} = 20;
$hash->{c} = 10;
my $string;
foreach (1..30){
my $element = randomKey($hash);
$string .= $element;
}

[download]
$string in the above case should contain approximately 15 'a', 10 'b' and '5' a.

I can always do : 

my @array;
foreach $key (keys %{$hash}){
  foreach $value($hash->{$key}){
  push @array,  $key;
 }
}

[download]
and then select random element from the @array; I am looking for the solution in which I don't need to build a big array

Thanks
Artist

In reply to Random Hash Key according to key frequency by artist

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • 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:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, 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, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.