Also, I think part of the problem (as you described it) may be due to the lack of suitable formatting (spaces and/or tabs and/or newlines, plus maybe some descriptive labels) when you print things. Note the difference between these two snippets:

my @arr = ( -10, -5, -1, 0, 2, 6, 11 );

# mimicking to the OP code:
for my $n ( @arr ) {
    print $n;
}

# being more detail-oriented:
for my $n ( @arr ) {
    print "$n\n";   # include a newline after the value
}
[download]