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| -rw-r--r-- | challenge-053/yet-ebreo/perl/ch-1.pl | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/challenge-053/yet-ebreo/perl/ch-1.pl b/challenge-053/yet-ebreo/perl/ch-1.pl new file mode 100644 index 0000000000..acc3cc4049 --- /dev/null +++ b/challenge-053/yet-ebreo/perl/ch-1.pl @@ -0,0 +1,45 @@ +#!/usr/bin/perl +use strict; +use warnings; +use feature 'say'; +# Rotate Matrix +# Write a script to rotate the followin matrix by given 90/180/270 degrees clockwise. +# [ 1, 2, 3 ] +# [ 4, 5, 6 ] +# [ 7, 8, 9 ] +# For example, if you rotate by 90 degrees then expected result should be like below +# [ 7, 4, 1 ] +# [ 8, 5, 2 ] +# [ 9, 6, 3 ] + +my @matrix = ( + [ 1, 2, 3 ], + [ 4, 5, 6 ], + [ 7, 8, 9 ], +); + +#Obfuscated routine to rotate array 90cw, because it's perl. :D +sub rotate {@{$_[0]}=map[map$_[0]->[-$_][$'],//..@{$_[0]}],0..~-@{$_[0]->[0]}} +rotate (\@matrix) for 1..($ARGV[0]||90)/90 % 4; +map {say "@{$_}"} @matrix; +=begin +perl .\ch-1.pl 90 +7 4 1 +8 5 2 +9 6 3 + +perl .\ch-1.pl 180 +9 8 7 +6 5 4 +3 2 1 + +perl .\ch-1.pl 270 +3 6 9 +2 5 8 +1 4 7 + +perl .\ch-1.pl 360 +1 2 3 +4 5 6 +7 8 9 +=cut
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