How can I get the count of array

if I have a array(Perl,C,JAVA,Perl,PHP,C)
I want to kow the count of this array? Get rid of the the same!
But not use length(array),
I want to kown how many kind of the array?
Any ideas?

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Adam Stoller

In Perl, if in scalar context - just use @array.
If you're not in scalar context, or aren't sure - force it: scalar(@array)

I'll leave it to someone else to answer the question regarding other languages.

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

gzevin

..or in perl $#array gives the count as well..... or, to be exact, the index of the last element of an array

Greg Zevin, Ph.D. Comp. Sc.
Independent Interwoven Consultant/Architect
Sydney, AU

Herman

I want to kown perl function,that rignt.
But I say I want to konw how many kind of this @array(11,11,22,22,33)
$#array is 5,
but want get 3 (kind of,get rid of the same)
any ideas?

gzevin

ah... first of all you need to get rid of the repetitions in the array. the best way to do it to run it thru a hash (look up the web, heaps of examples.. Perl Cookbook I think has some as well). Then you're crusing....

Greg Zevin, Ph.D. Comp. Sc.
Independent Interwoven Consultant/Architect
Sydney, AU

jbonifaci

If you just want to get the count of unique items:
my @array = ('10', '11', '12', '10', '12', '13', '14');
my %hash = map {$_,''} @array;
my $hashSize = $#{[keys %hash]};If you want to remove duplicates from the array:
my @array = ('10', '11', '12', '10', '12', '13', '14');
my %hash = map {$_,''} @array;
@array = sort(keys %hash);~Jeff

Herman

Thank you Jeff, that's just I want!