I'll leave the reading of the hash as an exercise to the user, but here's a fun way to populate the hash:
Update: Apparently, here's a really slow, dangerous, stupid, fraught with peril, performancing dehancing way to do it. Oh well, some code just sucks, don't it?
#!/usr/local/bin/perl -w
use strict;
use Data::Dumper;
{
my %hash = ();
while (<DATA>)
{
my $s;
$s .= "{'$_'}" foreach (/(...)/g);
eval ('$hash ' . $s . '++');
die $@ if $@;
}
print Dumper ([\%hash]);
}
__DATA__
aaabbbcccddd
aab
aacbbb
aaabbacca
aaabbaccb
ababbbddd
$VAR1 = [
{
'aab' => 1,
'aba' => {
'bbb' => {
'ddd' => 1
}
},
'aac' => {
'bbb' => 1
},
'aaa' => {
'bba' => {
'cca' => 1,
'ccb' => 1
},
'bbb' => {
'ccc' => {
'ddd' => 1
}
}
}
}
];
--Chris
e-mail jcwren
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