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);
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.
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