comment on

Just for fun, I wanted to try this with the regexp engine...

#!/usr/bin/perl
use strict;
use warnings;

my @data = qw ( 01 b2 01 00 b6 81 81 01 b4 0a 01 01 01 01 00
                01 00 00 01 00 c7 82 82 01 b2 01 00 b8 );

$_ = join(' ', @data);

while ( /(8[[:xdigit:]])\s+\1/g ) {
  print "Duplicate $1 found at character " . pos() . "\n";
}
[download]

Produces...

bash$ superdoc.pl
Duplicate 81 found at character 20
Duplicate 82 found at character 68
[download]

Using...

# while ( /([[:xdigit:]]{2})\s+\1/g ) {
[download]

instead, will match any repeated hex digit...

bash$ superdoc.pl
Duplicate 81 found at position 20
Duplicate 01 found at position 35
Duplicate 01 found at position 41
Duplicate 00 found at position 53
Duplicate 82 found at position 68
[download]

Cheers!

In reply to Re: match two elements from an array in a row by shoness
in thread match two elements from an array in a row by cengineer

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, 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, 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:
	&		`&`
	<		`<`
	>		`>`
	[		`[`
	]		`]`

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.


Problems? Is your data what you think it is?
	PerlMonks