2bevil1
New User
Mar 6, 2008, 1:06 PM
Post #4 of 7
(6305 views)
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Sorry. I will clarify, the unique numbers need to be displayed as two digits 01-47.
The following code does it but assigns the random number to a hash to make them unique.
I do not want to assign the number to a hash to do this. Near the bottom I have some code that my instructor gave me but it is not working.
#!/usr/bin/perl
my @numbers = (1..47);
my $limit = 5;
# A hash used to make sure we have
# all unique numbers in the final list.
my %list = ();
# Here we generate the list of random
# unique numbers. The hash continues to
# build until there are $limit number
# of keys. Since hash keys must be unique
# we are left with all unique numbers
# without having to check anything except the
# total number of keys.
while (keys %list < $limit) {
$list{$numbers[rand @numbers]}=1;
}
# print sorted (ascending) list of numbers
print join(' ', sort {$a <=> $b} keys %list);
My instuctor gave me this code to use in my assignment, but I can not get it to work.
I need to generate random lotto numbers.
#!/usr/bin/perl -w
@x=uniq(5, 10, 20);
sub uniq($$$)
{
my ($n, $a, $b)=@_;
my $str="0"x($b-$a+1);
my $c=0;
my @x=();
while($c < $n)
{
$num = int(rand($a, $b));
if(substr($str, $num-$a,1)=="0")
{
$x[$c++]=$num;
}
}
return (@x)
}
Any help you can give me is much appriciated. Im very basic.
Thanks in advanced.
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