CGI Perl Interview Question:

Sort a word "system" in perl/shell without using built in functions output should be emssty?

Submitted by: Administrator

#!/usr/bin/perl

my $word = $ARGV[0];
$sortword = "";
$lastchar = "";

while($word =~ /(.)/g)
{
$lastchar = $1;
if( $sortword ) {
$flag = "";
$newsortword = "";
while($sortword =~ /(.)/g) {
if( $lastchar gt $1 || $flag
eq "charcovered") {

$newsortword =
$newsortword.$1;
$flag = "greater" if($flag
ne "charcovered")
}
else {
$newsortword =
$newsortword.$lastchar.$1;
$flag = "charcovered";
}
}
if( $flag ne "charcovered" ) {
$newsortword =
$newsortword.$lastchar;
}

$sortword = $newsortword;
}
else {
$sortword = $lastchar;
}
}

print $sortword."n";
Submitted by: Administrator