Challenge 137 by Jaldhar H. Vyas.

5 files changed, 93 insertions, 0 deletions

diff --git a/challenge-137/jaldhar-h-vyas/blog.txt b/challenge-137/jaldhar-h-vyas/blog.txt
new file mode 100644
index 0000000000..a54c57bd8d
--- /dev/null
+++ b/challenge-137/jaldhar-h-vyas/blog.txt
@@ -0,0 +1 @@
+https://www.braincells.com/perl/2021/11/perl_weekly_challenge_week_137.html
diff --git a/challenge-137/jaldhar-h-vyas/perl/ch-1.pl b/challenge-137/jaldhar-h-vyas/perl/ch-1.pl
new file mode 100755
index 0000000000..55ef26ddcb
--- /dev/null
+++ b/challenge-137/jaldhar-h-vyas/perl/ch-1.pl
@@ -0,0 +1,15 @@
+#!/usr/bin/perl
+use 5.020;
+use warnings;
+
+sub p {
+    my ($year) = @_;
+    return (($year + int($year / 4) - int($year / 100) +  int($year / 400)) % 7);
+}
+
+sub isLongYear {
+    my ($year) = @_;
+    return (p($year) == 4 || p($year - 1) == 3); 
+}
+
+say join q{, }, grep { isLongYear($_); } (1900 .. 2100);
diff --git a/challenge-137/jaldhar-h-vyas/perl/ch-2.pl b/challenge-137/jaldhar-h-vyas/perl/ch-2.pl
new file mode 100755
index 0000000000..b2f25fb5d5
--- /dev/null
+++ b/challenge-137/jaldhar-h-vyas/perl/ch-2.pl
@@ -0,0 +1,35 @@
+#!/usr/bin/perl
+use 5.020;
+use warnings;
+
+sub usage {
+    say 'Need an integer between 10 and 1000';
+    exit 0;
+}
+
+sub lychrel {
+    my ($n) = @_;
+
+    my $i = $n;
+    for (1 .. 500) {
+        my $r = join q{}, (reverse split //, $i);
+        $i =  $i + $r;
+
+        if ($i == join q{}, (reverse split //, $i)) {
+            return 0;
+        }
+
+        if ($i > 10_000_000) {
+            return 1;
+        }
+    }
+
+    return 1;
+}
+
+my $n = shift // usage;
+if ($n < 10 || $n > 1000) {
+    usage;
+}
+
+say lychrel($n);
diff --git a/challenge-137/jaldhar-h-vyas/raku/ch-1.raku b/challenge-137/jaldhar-h-vyas/raku/ch-1.raku
new file mode 100755
index 0000000000..fd9e3537f4
--- /dev/null
+++ b/challenge-137/jaldhar-h-vyas/raku/ch-1.raku
@@ -0,0 +1,16 @@
+#!/usr/bin/raku
+
+sub p(Int $year) {
+    return (($year + ($year div 4) - ($year div 100) +  ($year div 400)) % 7);
+}
+
+sub isLongYear(Int $year) {
+    return p($year) == 4 || p($year - 1) == 3; 
+}
+
+sub MAIN() {
+    (1900 .. 2100)
+        .grep({ isLongYear($_); })
+        .join(q{, })
+        .say;
+}
diff --git a/challenge-137/jaldhar-h-vyas/raku/ch-2.raku b/challenge-137/jaldhar-h-vyas/raku/ch-2.raku
new file mode 100755
index 0000000000..8fb34d1d0f
--- /dev/null
+++ b/challenge-137/jaldhar-h-vyas/raku/ch-2.raku
@@ -0,0 +1,26 @@
+#!/usr/bin/raku
+
+sub lychrel(Int $n) {
+
+    my $i = $n;
+    for 1 .. 500 {
+        my $r = $i.comb.reverse.join;
+        $i =  $i + $r;
+
+        if $i == $i.comb.reverse.join {
+            return 0;
+        }
+
+        if $i > 10_000_000 {
+            return 1;
+        }
+    }
+
+    return 1;
+}
+
+sub MAIN(
+    Int $n where { $n >= 10 && $n <= 1000 } #= integer between 10 and 1000
+) {
+    say lychrel($n);
+}
\ No newline at end of file