How To Calculate Simple Moving Average (SMA) using Perl?

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use strict;
use warnings;

sub sma {
    my ($data, $period) = @_;
    my @sma_values;

    for (my $i = $period - 1; $i < scalar(@$data); $i++) {
        my $sum = 0;
        for (my $j = $i - ($period - 1); $j <= $i; $j++) {
            $sum += $data->[$j];
        }
        my $average = $sum / $period;
        push @sma_values, $average;
    }

    return @sma_values;
}

# Example usage
my @data = (2, 4, 6, 8, 10, 12, 14, 16, 18, 20);
my $period = 3;

my $sma_values = sma(@data, $period);

for my $i (0 .. $#{$sma_values}) {
    print "SMA for period $period at index $i: $sma_values->[$i]
";
}