From 384b5a40d9206a23f0b39465a33489e9ca9fa049 Mon Sep 17 00:00:00 2001
From: "Jaldhar H. Vyas" <jaldhar@braincells.com>
Date: Sun, 24 Oct 2021 20:35:51 -0400
Subject: Challenge 135 by Jaldhar H. Vyas.

---
 challenge-135/jaldhar-h-vyas/blog.txt       |  1 +
 challenge-135/jaldhar-h-vyas/perl/ch-1.pl   | 23 +++++++++++++++++++
 challenge-135/jaldhar-h-vyas/perl/ch-2.pl   | 35 +++++++++++++++++++++++++++++
 challenge-135/jaldhar-h-vyas/raku/ch-1.raku | 23 +++++++++++++++++++
 challenge-135/jaldhar-h-vyas/raku/ch-2.raku | 33 +++++++++++++++++++++++++++
 5 files changed, 115 insertions(+)
 create mode 100644 challenge-135/jaldhar-h-vyas/blog.txt
 create mode 100755 challenge-135/jaldhar-h-vyas/perl/ch-1.pl
 create mode 100755 challenge-135/jaldhar-h-vyas/perl/ch-2.pl
 create mode 100755 challenge-135/jaldhar-h-vyas/raku/ch-1.raku
 create mode 100755 challenge-135/jaldhar-h-vyas/raku/ch-2.raku

diff --git a/challenge-135/jaldhar-h-vyas/blog.txt b/challenge-135/jaldhar-h-vyas/blog.txt
new file mode 100644
index 0000000000..76eb86cd57
--- /dev/null
+++ b/challenge-135/jaldhar-h-vyas/blog.txt
@@ -0,0 +1 @@
+https://www.braincells.com/perl/2021/10/perl_weekly_challenge_week_135.html
diff --git a/challenge-135/jaldhar-h-vyas/perl/ch-1.pl b/challenge-135/jaldhar-h-vyas/perl/ch-1.pl
new file mode 100755
index 0000000000..bd5d1e47d3
--- /dev/null
+++ b/challenge-135/jaldhar-h-vyas/perl/ch-1.pl
@@ -0,0 +1,23 @@
+#!/usr/bin/perl
+use 5.020;
+use warnings;
+
+my $n = shift // die "Need an integer.\n";
+
+$n =~ s/^\-//;
+
+if ($n !~ /^\d+$/) {
+    die "Not an integer.\n";
+}
+
+my $len = length $n;
+
+if ($len % 2 == 0) {
+    die "Even number of digits\n";
+}
+
+if ($len < 3) {
+    die "Too short.\n";
+}
+
+say substr $n, ($len - 3) / 2, 3;
\ No newline at end of file
diff --git a/challenge-135/jaldhar-h-vyas/perl/ch-2.pl b/challenge-135/jaldhar-h-vyas/perl/ch-2.pl
new file mode 100755
index 0000000000..3ec8672399
--- /dev/null
+++ b/challenge-135/jaldhar-h-vyas/perl/ch-2.pl
@@ -0,0 +1,35 @@
+#!/usr/bin/perl
+use 5.020;
+use warnings;
+
+sub check {
+    my ($sedol) = @_;
+
+    if (length $sedol != 7) {
+        return undef;
+    }
+
+    if ($sedol !~ /^ [0-9B-DF-HJ-NP-TV-Z]{6} [0-9] $/x) {
+        return undef;
+    }
+
+    my @weights = (1, 3, 1, 7, 3, 9, 1);
+
+    my @chars = split //, $sedol;
+
+    my $sum = 0;
+
+    for my $i (0 .. 5) {
+        if (ord($chars[$i]) >= ord('0') && ord($chars[$i]) <= ord('9')) {
+            $sum += $chars[$i] * $weights[$i];
+        } else {
+            $sum += (ord($chars[$i]) - ord('A')) * $weights[$i];
+        }
+    }
+
+    return ((10 - $sum % 10) % 10) == $chars[6];
+}
+
+my $sedol = shift // die "Need a seven character string.\n";
+
+say check($sedol) ? '1' : '0';
diff --git a/challenge-135/jaldhar-h-vyas/raku/ch-1.raku b/challenge-135/jaldhar-h-vyas/raku/ch-1.raku
new file mode 100755
index 0000000000..ad4f727a70
--- /dev/null
+++ b/challenge-135/jaldhar-h-vyas/raku/ch-1.raku
@@ -0,0 +1,23 @@
+#!/usr/bin/raku
+
+sub MAIN(
+    Int $N
+) {
+    my $n = $N.subst(/^\-/, q{});
+
+    if $n !~~ /^ \d+ $/ {
+        die "$n Not an integer.\n";
+    }
+
+    my $len = $n.chars;
+
+    if $len % 2 == 0 {
+        die "Even number of digits\n";
+    }
+
+    if $len < 3 {
+        die "Too short.\n";
+    }
+
+    say $n.substr(($len - 3) / 2, 3);
+}
diff --git a/challenge-135/jaldhar-h-vyas/raku/ch-2.raku b/challenge-135/jaldhar-h-vyas/raku/ch-2.raku
new file mode 100755
index 0000000000..72e799feba
--- /dev/null
+++ b/challenge-135/jaldhar-h-vyas/raku/ch-2.raku
@@ -0,0 +1,33 @@
+#!/usr/bin/raku
+
+sub check(Str $sedol) {
+    if ($sedol.chars != 7) {
+        return False;
+    }
+
+    if ($sedol !~~ /^ <[0..9] + [A..Z] - [AEIOU]> ** 6 <[0..9]> $ /) {
+        return False;
+    }
+
+    my @weights = (1, 3, 1, 7, 3, 9, 1);
+
+    my @chars = $sedol.comb;
+
+    my $sum = 0;
+
+    for 0 .. 5 -> $i {
+        if (@chars[$i].ord >= '0'.ord && @chars[$i].ord <= '9'.ord) {
+            $sum += @chars[$i] * @weights[$i];
+        } else {
+            $sum += (@chars[$i].ord - 'A'.ord) * @weights[$i];
+        }
+    }
+
+    return ((10 - $sum % 10) % 10) == @chars[6];
+}
+
+sub MAIN(
+    Str $sedol #= seven character string
+) {
+    say check($sedol) ?? '1' !! '0';
+}
-- 
cgit