Week 242

2 files changed, 63 insertions, 0 deletions

diff --git a/challenge-242/cheok-yin-fung/perl/ch-1.pl b/challenge-242/cheok-yin-fung/perl/ch-1.pl
new file mode 100644
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+++ b/challenge-242/cheok-yin-fung/perl/ch-1.pl
@@ -0,0 +1,41 @@
+# The Weekly Challenge 242
+# Task 1 Missing Members
+use v5.30.0;
+use warnings;
+use List::Util qw/uniqint/;
+
+sub mm {
+    my @arr1 = $_[0]->@*;
+    my @arr2 = $_[1]->@*;
+    my @brr1 = uniqint @arr1;
+    my @brr2 = uniqint @arr2;
+    my @commons;
+    for my $e1 (@brr1) {
+        for my $e2 (@brr2) {
+            push @commons, $e1 if $e1 == $e2;
+        }
+    }
+    @commons = uniqint @commons;
+    # @commons = sort {$a<=>$b} @commons;
+    # @brr1 = sort {$a<=>$b} @brr1;
+    # @brr2 = sort {$a<=>$b} @brr2;
+    return [
+      [grep {!contains([@commons], $_)} @brr1],
+      [grep {!contains([@commons], $_)} @brr2],
+    ];
+}
+
+sub contains {
+    my @arr = $_[0]->@*;
+    my $i = $_[1];
+    for (@arr) {
+        return 1 if $_ == $i;
+    }
+    return 0;
+}
+
+use Data::Printer;
+my $ex1 = mm([1,2,3], [2,4,6]);
+p $ex1;
+my $ex2 = mm([1,2,3,3], [1,1,2,2]);
+p $ex2;
diff --git a/challenge-242/cheok-yin-fung/perl/ch-2.pl b/challenge-242/cheok-yin-fung/perl/ch-2.pl
new file mode 100644
index 0000000000..d9a30085a4
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+++ b/challenge-242/cheok-yin-fung/perl/ch-2.pl
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+# The Weekly Challenge 242
+# Task 2 Flip Matrix
+use v5.30.0;
+use warnings;
+
+sub fm {
+    my @matrix = @_;
+    my $n = 1 + $#matrix;
+    my $n_matrix = [];
+    for my $i (0..$n-1) {
+        push $n_matrix->@*, 
+          [map {0+!$_} reverse $matrix[$i]->@*];
+    }
+    return $n_matrix;
+}
+
+use Test::More tests=>2;
+use Test::Deep;
+cmp_deeply fm([1, 1, 0], [1, 0, 1], [0, 0, 0]), 
+           [[1, 0, 0], [0, 1, 0], [1, 1, 1]];
+cmp_deeply fm([1, 1, 0, 0], [1, 0, 0, 1], [0, 1, 1, 1], [1, 0, 1, 0]),
+           [[1, 1, 0, 0], [0, 1, 1, 0], [0, 0, 0, 1], [1, 0, 1, 0]];