NOT a general solution, unless all cases closely match the sample presented (which doesn't seem to show any reasonable use of a regex to solve the problem. For a prime example, why would you do the unnecessary work of dividing the word "chapter" into a literal fragment and a captured [a-z]* class? This way lies madness!

OTOH, many will think this plodding, literal-minded code mad.... or at best, inelegant. So be it... in the name of a clear and explicit demo of an algorithm implemented more gracefully by others, above:

#!/usr/bin/perl
use 5.016;
use Data::Dumper;
# 1030798

my $str = "chapter 1,2,3";     # out: "chapter 1, chapter  2, chapter 
+3"
my @arr = split / /,$str;      # split to 2 element array, "chapter" &
+ "1,2,3"

my @chaptnums = split /,/,$arr[1];
for my $elem(@chaptnums) {
    print "$arr[0] $elem";      # e.g. "chapter " . num
    if (scalar $elem != (1+$#chaptnums) ) {  # not the last @chaptnums
+ element?
        print ", ";
    } else {
        print "\n";
    }
    
}

=head EXECUTION

C:>1030798.pl
chapter 1, chapter 2, chapter 3

=cut

[download]

Again, CAUTION: The code above is NOT how to do the job; it's for instruction purposes, only.


If you didn't program your executable by toggling in binary, it wasn't really programming!

In reply to Re: how to fetch 1,2,3, from chapter by ww
in thread how to fetch 1,2,3, from chapter by virudinesh

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