/
ch-2.pl
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/
ch-2.pl
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#!/usr/bin/perl
use strict;
#Variables
my $random;
my @array;
my $i = 0;
my $text;
my $code = 0;
generateString();
validation();
result();
#Fuctions
#Create the string of parenthesis by generates random numbers between 0-2 (0 = '(', 1 = ')' and 2 = end).
sub generateString {
$random = int rand(2);
convertParenthesis();
while ($random != 2) {
$random = int rand(3);
convertParenthesis();
}
}
#Converts the numbers generated into parenthesis
sub convertParenthesis{
if ($random == '0') {
@array[$i] = $random;
$text .= '(';
$i++;
}
elsif ($random == '1') {
@array[$i] = $random;
$text .= ')';
$i++;
}
}
#Checks if the string has balanced brackets
sub validation {
my $length = @array;
for (my $j = 0; $j < $length; $j++) {
if (@array[$j] == 0) {
$code++;
}
elsif (@array[$j] == 1 and $code != 0) {
$code--;
}
else {
$code = 1;
last;
}
}
}
#Write the string and indicate if it's ok or not
sub result {
if ($code == 0) {
print "$text - OK\n";
}
else {
print "$text - NOT OK\n";
}
}