Since your strings and integers are unique - why don't you use a hash for strings and an array for integers 

#!/usr/bin/perl -l

my %str2int;
my @int2str;

$i=0;
for ('aaaa'..'zzzz') {
    $str2int{ $_ } = ++$i;
    $int2str[$i] = $_;
}

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and look up the strings by index into the array, and the integers by key into the hash?

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re: Bidirectional lookup algorithm? (Updated: further info.) by shmem
in thread Bidirectional lookup algorithm? (Updated: further info.) by BrowserUk

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