in reply to Problem regarding storing the values in Hash.

Let the hash take care of duplicate key removal: 
my %hash;
foreach my $i (0 .. $#num) {
    my $key = $num[$i];
    my $value = $address[$i];
    $hash{$key} = $value;
}
print "$_ => $hash{$_}\n" for keys %hash;

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It's not clear to me from your problem description that this is correct, but I'll submit it as a "talking point".

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Re^2: Problem regarding storing the values in Hash.
by jdalbec (Deacon) on Feb 19, 2005 at 15:59 UTC
    ObGolf: 
    @num = (1, 1, 3, 2, 4, 3, 5);
@address = (address1, address1, address3, address2, address4, address3
+, address5 );
my %hash;
@hash{@num}=@address;
print "$_ => $hash{$_}\n" for sort {$a <=> $b} keys %hash;

    [download]
    I added the sort since it looks like the OP wanted it.
[reply]
[d/l]

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