Hi saihuj,

This code is by no means robust, but it should work if the data files are in _exactly_ the form you state.

Also, I am not sure whether 15/19/2001 means the 15th day of the 19th month, or vice versa. Whatever, that month is out of scale in my planet :-). So I assume dd/mm/yy

Oh, and it doesn't check the integrity of dates :-). Did I mention that.

Still, I hope the sort code can help you become familiar with how things work. 

#!/usr/bin/perl -w

use strict;

open DATA, "./data.txt"; # or wherever the file is

my @data=<DATA>;

my @sorted = sort sort_func @data ;
for(@sorted){print $_};

sub sort_func{

    my ($a_dd,$a_mm,$a_yy)=$a =~ m|(\d*)/(\d*)/(\d*)|;
    my ($b_dd,$b_mm,$b_yy)=$b =~ m|(\d*)/(\d*)/(\d*)|;
    return ( $a_yy<=>$b_yy 
                || 
             $a_mm<=>$b_mm 
                || 
             $a_dd<=>$b_dd);
}

[download]
cheers

thinker

In reply to Re: Sorting rows in a text file by thinker
in thread Sorting rows in a text file by saihuj

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