Hi lakssredhar,
A suggestions:
I need to print the column1 as a row outside the while loop so i used 

...
push @first_sentence,$arr[0];
}print join ' ',@first_sentence;

[download]
I was kind of thinking, why, push all the column 1 into an array variable, in work on the array outside the while loop.
what of if all work were done in the while loop? Like so: 
use warnings;
use strict;

my $line;

while (<DATA>) {
    my $part = (split)[0];
    if (/[.()]/) {
        $line =~ s/\s*$//;
        $line .= $part;
    }
    else {
        $line .= $part . q[ ];
    }
}

print $line;

__DATA__ 
i o
am  o
2  o
(  o
but o
)  o
.  o
how o

[download]

If you tell me, I'll forget.
If you show me, I'll remember.
if you involve me, I'll understand.
--- Author unknown to me

In reply to Re: remove spaces after join operation by 2teez
in thread remove spaces after join operation by lakssreedhar

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