2d数组：更改元素Perl

Question

I have a 2d array in Perl. I passed the array to a subroutine and I want to modify all elements of the 2d array then return it and print the array. I have attached my code so far below. The problem I am having is actually changing each individual element and passing the array to a subroutine.

Original Matrix+Code

       x            y       z
CG  -3.74900 -4.89100 -3.45400 
OD1 -6.45900 -6.29100 -6.08000 
OD2 -1.31600 -1.83300 -0.17600   

sub translateMatrixOperation
{
my (@translatematrix, $x, $y, $z) = @_;
print "PRINTING FIRST\n";
my $arrsize = scalar @translatematrix;
for(my $i = 0; $i <= $arrsize; $i++)
{
    for(my $j = 0; $j <= $arrsize; $j++)
    {
        if ($j == 0)
        {
            print "[$i][$j]:$translatematrix[$i][$j]\n";
            $_ = $_ - $x;
        }
        elsif ($j == 1)
        {
            print "[$i][$j]:$translatematrix[$i][$j]\n";
           $_ = $_ - $y;
        }
        elsif ($j == 2)
        {
            print "[$i][$j]:$translatematrix[$i][$j]\n";
            $_ = $_ - $z;
        }
    }
}
print "PRINTING\n";
for(my $i = 0; $i <= $arrsize; $i++)
{
    for(my $j = 0; $j <= $arrsize; $j++)
    {
        print "$translatematrix[$i][$j] ";
    }
    print "\n";
}
# return (\@translatematrix);

} I want to edit the whole array by adding a constant value to the x values, a constant value to the y values, and a constant to the z. Where did I go wrong?

Answer 1

my (@translatematrix, $x, $y, $z) = @_;

does not make sense as @translatematrix slurps all elements from @_ , and should be:

my ($translatematrix, $x, $y, $z) = @_;

where $translatematrix is array reference.

        $_ = $_ - $x;

should be more like

$translatematrix->[$i][$j] -= $x;

and also similar logic to $y and $z should be applied.