Algorithmically, you can think of this as a tensor product of 2 2x2 matrices. In code, you could represent this as
for my $a (0,1) {
for my $b (0,1) {
print "Quadrant $a,$b:\n";
for my $i (0,1) {
for my $j (0,1) {
my $row = 2*$a + $i;
my $col = 2*$b + $j;
print " element $i,$j => matrix coord $row, $col\n";
}
}
}
}
If you wanted to convert in the opposite direction, just use the inverse equations:
for my $row (0..3) {
for my $col (0..3) {
print "Quadrant ", int($row/2),',',int($col/2);
print " Element ", $row % 2,',', $col % 2,"\n";
}
}
Update: added inverse operation.
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
|
For: |
|
Use: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
|
|