Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

Hi PerlMonks,

I think it might be a very silly question to ask but I am at my wit's end to find the solution. I am interested to produce the first tetra-word (ABCD) from a long string (ABCDEFGH), then to delete the first letter from the string and get the tetra word (BCDE) along with its starting position. I have written a script  try.pl using foreach LOOP which shows the tetra words but starting positions for tetra-word CDEF and DEFG are wrong. Moreover, the loop does not show the last tetra-word i.e. EFGH. So, after the loop I have written the code in line 15 to get the last tetra-word. Can I expect a better code to get all the tetra words i.e. ABCD,BCDE,CDEF,DEFG,EFGH with correct starting positions?

Here goes the script try.pl:

#!/usr/bin/perl use warnings; $pro="ABCDEFGH"; @pro=split('',$pro); print"\n\n Tetra words are:\n"; $one=1; foreach my $item (@pro) { @tetra=@pro [0..3]; $pos=$+[0]+$one; # Line 8 $tetra=join('',@tetra); print"\n $tetra ->Starting at pos $pos\n"; $pro =~ s/.//; @pro=split('',$pro); } # To get the last tetra: $last=join('',@pro); print"\n $last\n"; # Line 15 exit;

I have got the following wrong results in cmd:

Microsoft Windows [Version 6.1.7600] C:\Users\x>cd desktop C:\Users\x\Desktop>try.pl Tetra words are: Use of uninitialized value in addition (+) at C:\Users\x\Desktop\try.p +l line 8. ABCD ->Starting at pos 1 BCDE ->Starting at pos 2 CDEF ->Starting at pos 2 DEFG ->Starting at pos 2 EFGH

The correct results should look like:

Tetra words are: ABCD ->Starting at pos 1 BCDE ->Starting at pos 2 CDEF ->Starting at pos 3 DEFG ->Starting at pos 4 EFGH ->Starting at pos 5

In reply to Is it possible to get all tetra words with correct starting position using a better code within a loop? by supriyoch_2008

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • 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:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others pondering the Monastery: (15)
    As of 2015-07-02 16:56 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









      Results (44 votes), past polls