The repetition operator is good if you want 100 of the same value. However, if you want all the multiples of 3, you need to do a for-loop or a map. Something like:

my $multiple = 3;
my @arr = map { $_ * $multiple } (0 .. 100);

# Or, you could do a for-loop

my $multiple = 3;
my @arr;
$arr[$_] = $_ * $multiple for (0 .. 100);
[download]

Note that all these solutions give 101 values, the 0th value being the first and the 100th value being the hundred-and-first. If you want only the first 100, do (0 .. 99) instead.

------
We are the carpenters and bricklayers of the Information Age.

Vote paco for President!