Yet another WTDI:
#!/usr/bin/perl
use strict;
use warnings;
use Data::Dumper;
my $data = '11122222344456788899';
my @data = split(//, $data);
my $accum = {};
my @buffer = ();
push(@buffer, shift(@data));
while (@data) {
push(@buffer, shift(@data));
if($buffer[0] == $buffer[1]) {
$accum->{$buffer[0]}++;
}
shift(@buffer);
}
print Dumper($accum);
*My* tenacity goes to eleven...
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