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| -rw-r--r-- | challenge-204/cheok-yin-fung/perl/ch-1.pl | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/challenge-204/cheok-yin-fung/perl/ch-1.pl b/challenge-204/cheok-yin-fung/perl/ch-1.pl new file mode 100644 index 0000000000..d59c1bcc0f --- /dev/null +++ b/challenge-204/cheok-yin-fung/perl/ch-1.pl @@ -0,0 +1,17 @@ +# The Weekly Challenge 204 +# Task 1 Monotonic Array +use v5.30.0; +use warnings; +use List::Util qw/all/; +use List::MoreUtils qw/slide/; + +sub ma { + my @arr = @_; + return (all {$_ >= 0} slide {$a-$b} @arr) + || (all {$_ <= 0} slide {$a-$b} @arr); +} + +use Test::More tests=>3; +ok ma(1,2,2,3) == 1; +ok ma(1,3,2) == 0; +ok ma(6,5,5,4) == 1; |