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| author | Lubos Kolouch <lubos@kolouch.net> | 2023-04-24 19:00:10 +0200 |
|---|---|---|
| committer | Lubos Kolouch <lubos@kolouch.net> | 2023-04-24 19:00:10 +0200 |
| commit | f90349fbd02a4b243f73bcdfc245abfa36df497f (patch) | |
| tree | 8d4bb3af2402229f3080acae86d0b3cf5f839f4f /challenge-070/lubos-kolouch/php/ch-2.php | |
| parent | c9649ccd3cfb48e26c19886bb399bd1820715f8c (diff) | |
| download | perlweeklychallenge-club-f90349fbd02a4b243f73bcdfc245abfa36df497f.tar.gz perlweeklychallenge-club-f90349fbd02a4b243f73bcdfc245abfa36df497f.tar.bz2 perlweeklychallenge-club-f90349fbd02a4b243f73bcdfc245abfa36df497f.zip | |
Challenge 070 LK
Diffstat (limited to 'challenge-070/lubos-kolouch/php/ch-2.php')
| -rw-r--r-- | challenge-070/lubos-kolouch/php/ch-2.php | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/challenge-070/lubos-kolouch/php/ch-2.php b/challenge-070/lubos-kolouch/php/ch-2.php new file mode 100644 index 0000000000..b85f40040b --- /dev/null +++ b/challenge-070/lubos-kolouch/php/ch-2.php @@ -0,0 +1,16 @@ +<?php + +$N = 4; +$grayCode = ['0', '1']; + +for ($i = 2; $i <= $N; $i++) { + $revGrayCode = array_reverse($grayCode); + $grayCode = array_map(function ($x) { return '0' . $x; }, $grayCode); + $revGrayCode = array_map(function ($x) { return '1' . $x; }, $revGrayCode); + $grayCode = array_merge($grayCode, $revGrayCode); +} + +$grayCode = array_map(function ($x) { return bindec($x); }, $grayCode); +echo implode(', ', $grayCode), "\n"; + +?> |