Beefy Boxes and Bandwidth Generously Provided by pair Networks
Welcome to the Monastery

Re^7: Finding repeat sequences. (only mostly regex)

by choroba (Bishop)
on Jun 18, 2013 at 20:44 UTC ( #1039663=note: print w/replies, xml ) Need Help??

in reply to Re^6: Finding repeat sequences. (only mostly regex)
in thread Finding repeat sequences.

Right. In fredfr, the ed will be matched by the .* between the repetitions. It corresponds to the missing part of the last repetition. Or am I missing something?
لսႽ ᥲᥒ⚪⟊Ⴙᘓᖇ Ꮅᘓᖇ⎱ Ⴙᥲ𝇋ƙᘓᖇ

Replies are listed 'Best First'.
Re^8: Finding repeat sequences. (Sorry!)
by BrowserUk (Pope) on Jun 18, 2013 at 20:56 UTC

    I am so sorry. You've done the same flip that tye did, capturing the partial rep rather than the complete rep. Threw me completely.

    With a couple of enhancements that works for the 1 rep/1 partial case:

    $s = 'aaaabaaaabaaaaabaaaab';; $s =~ /^((.*).*)\2$/ and print "$1/$2";; aaaabaaaaba/aaaabaaaab

    And still works for that when enhanced to allow for more than 1 complete rep:

    $s =~ /^((.*).*)\1*\2$/ and print "$1/$2";; aaaabaaaaba/aaaabaaaab

    But then fails when given more than one complete rep:

    $s = 'aaaabaaaabaaaaabaaaabaaaaabaaaab';; $s =~ /^((.*).*)\1*\2$/ and print "$1/$2";; aaaabaaaabaaaaabaaaaba/aaaabaaaab

    With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
    Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
    "Science is about questioning the status quo. Questioning authority".
    In the absence of evidence, opinion is indistinguishable from prejudice.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1039663]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others examining the Monastery: (3)
As of 2018-01-21 01:40 GMT
Find Nodes?
    Voting Booth?
    How did you see in the new year?

    Results (227 votes). Check out past polls.