- Added solutions by Peter Campbell Smith.

18 files changed, 2644 insertions, 2423 deletions

diff --git a/challenge-148/peter-campbell-smith/blog.txt b/challenge-148/peter-campbell-smith/blog.txt
new file mode 100755
index 0000000000..da3f74d055
--- /dev/null
+++ b/challenge-148/peter-campbell-smith/blog.txt
@@ -0,0 +1 @@
+https://pjcs-pwc.blogspot.com/2022/01/numbers-in-words-and-cardano-triplets.html
diff --git a/challenge-148/peter-campbell-smith/perl/ch-1.pl b/challenge-148/peter-campbell-smith/perl/ch-1.pl
new file mode 100755
index 0000000000..f83ffb097b
--- /dev/null
+++ b/challenge-148/peter-campbell-smith/perl/ch-1.pl
@@ -0,0 +1,71 @@
+#!/usr/bin/perl
+
+# Peter Campbell Smith - 2022-01-17
+# PWC 148 task 1
+
+use v5.28;
+use strict;
+use warnings;
+use utf8;
+
+# Write a script to generate all Eban Numbers <= 100.
+# An Eban number is a number that has no letter ‘e’ in it when the number is spelled 
+# in English (American or British)
+
+my ($j, $words, @digits, @tenties, @teens);
+@digits = ((''), qw[one two three four five six seven eight nine]);
+@tenties = (('', ''), qw[twenty thirty forty fifty sixty seventy eighty ninety]);
+@teens = qw[ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen];
+
+# the easy bit
+say qq[\nAll Eban Numbers <= 100];
+for $j (1 .. 100) {
+	$words = words($j);
+	say qq[$j - $words] unless $words =~ m|e|;
+}
+
+# convert an integer to words (works up to 999,999)
+sub words {
+		
+	my ($number, $thousands, $words);
+	$number = $_[0];
+	
+	# deal with thousands
+	$thousands = int($number / 1000);
+	$words = $thousands != 0 ? words3($thousands) . ' thousand' : '';
+
+	# and the rest
+	$number -= $thousands * 1000;
+	$words = $words . ' and' if ($thousands != 0 and $number < 100 and $number != 0); 
+	$words = $words . words3($number);
+	$words =~ s|.||; # remove initial blank
+	return $words;
+}
+
+sub words3 {
+
+	# convert 1-999 into words
+	my ($number, $hundreds, $words3, $tens, $units, $hyphen);
+	return 'zero' unless $number = $_[0];
+	$words3 = '';
+		
+	# hundreds
+	$hundreds = int($number / 100);
+	$words3 = $words3 . ' ' . $digits[$hundreds] . ' hundred' if $hundreds != 0;
+	$number -= $hundreds * 100;
+	if ($number) {
+		$words3 = $words3 . ' and' if $hundreds != 0;
+		
+		# tens and units
+		$tens = int($number / 10);
+		$units = $number - 10 * $tens;
+		if ($tens != 1) {
+			$hyphen = ($units != 0 and $tens != 0) ? '-' : '';
+			$words3 = $words3 . ' ' . $tenties[$tens] . $hyphen . $digits[$units];
+		} else {
+			$words3 = $words3 . ' ' . $teens[$units];
+		}
+	}
+
+	return $words3;
+}
diff --git a/challenge-148/peter-campbell-smith/perl/ch-2.pl b/challenge-148/peter-campbell-smith/perl/ch-2.pl
new file mode 100755
index 0000000000..08346b8c70
--- /dev/null
+++ b/challenge-148/peter-campbell-smith/perl/ch-2.pl
@@ -0,0 +1,59 @@
+#!/usr/bin/perl
+
+# Peter Campbell Smith - 2022-01-10
+# PWC 148 task 2
+
+use v5.28;
+use warnings;
+use strict;
+use utf8;
+
+# Write a script to generate first 5 Cardano Triplets.  (Let's assume that 'first 5' means
+# first 5 ordered by a + b + c.)
+
+# A triplet of positive integers (a,b,c) is called a Cardano Triplet 
+# if it satisfies:
+# cube_root(a + b * sqrt(c)) + cube_root(a - b * sqrt(c)) = 1
+
+my ($a, $b, $c, $sqrt_c, %results, $cardano, $sum, $answer, $term1, $term2, $j, $b_sqrt_c);
+
+# try 1 million possibilities - probably overkill!
+for $c (1 .. 100) {
+	$sqrt_c = sqrt($c);
+	for $b (1 .. 100) {
+		$b_sqrt_c = $b * $sqrt_c;
+		for $a (1 .. 100) {
+			
+			# need to allow for imprecision in floating point operations
+			$term1 = cbrt($a + $b_sqrt_c);
+			$term2 = cbrt($a - $b_sqrt_c);
+			if (abs($term1 + $term2 - 1) < 1e-10) {
+				$results{sprintf('%06d¦%s', $a + $b + $c, 
+					qq[$a, $b, $c :: $term1 + $term2 = 1])} = 1;
+			}	
+		}
+	}
+}
+	
+# sort and print results in ascending order of a + b + c
+$j = 0;
+say qq[\nFirst 5 Cardano triplets];
+for $cardano (sort keys %results) {
+	($sum, $answer) = split('¦', $cardano);
+	say $answer;
+	say qq[\n... and some more] if ++$j == 5;
+}
+
+
+sub cbrt {
+	
+	# cube root
+	my $arg = $_[0];
+	if ($arg >= 0) {
+		return $arg ** (1 / 3);
+		
+	# cube root of -x is minus cube root of x
+	} else {
+		return -((-$arg) ** (1 / 3));
+	}
+}
\ No newline at end of file
diff --git a/stats/pwc-challenge-147.json b/stats/pwc-challenge-147.json
new file mode 100644
index 0000000000..b7456c1a29
--- /dev/null
+++ b/stats/pwc-challenge-147.json
@@ -0,0 +1,628 @@
+{
+   "legend" : {
+      "enabled" : 0
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "series" : [
+      {
+         "name" : "The Weekly Challenge - 147",
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "drilldown" : "Abigail",
+               "name" : "Abigail",
+               "y" : 4
+            },
+            {
+               "name" : "Adam Russell",
+               "drilldown" : "Adam Russell",
+               "y" : 4
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Alexander Karelas",
+               "name" : "Alexander Karelas"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Alexander Pankoff",
+               "name" : "Alexander Pankoff"
+            },
+            {
+               "name" : "Arne Sommer",
+               "drilldown" : "Arne Sommer",
+               "y" : 5
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Athanasius",
+               "name" : "Athanasius"
+            },
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+               "drilldown" : "Bruce Gray",
+               "name" : "Bruce Gray",
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+               "drilldown" : "Cheok-Yin Fung"
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+               "name" : "Colin Crain",
+               "drilldown" : "Colin Crain"
+            },
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+               "name" : "Dave Jacoby",
+               "y" : 3
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Duncan C. White",
+               "name" : "Duncan C. White"
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+            {
+               "name" : "E. Choroba",
+               "drilldown" : "E. Choroba",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Flavio Poletti",
+               "name" : "Flavio Poletti",
+               "y" : 6
+            },
+            {
+               "y" : 5,
+               "drilldown" : "Jaldhar H. Vyas",
+               "name" : "Jaldhar H. Vyas"
+            },
+            {
+               "drilldown" : "James Smith",
+               "name" : "James Smith",
+               "y" : 3
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Jan Krnavek",
+               "name" : "Jan Krnavek"
+            },
+            {
+               "drilldown" : "Laurent Rosenfeld",
+               "name" : "Laurent Rosenfeld",
+               "y" : 5
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+               "name" : "Mark Anderson",
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+               "drilldown" : "Mark Senn",
+               "name" : "Mark Senn",
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+            },
+            {
+               "y" : 2,
+               "name" : "Marton Polgar",
+               "drilldown" : "Marton Polgar"
+            },
+            {
+               "name" : "Matthew Neleigh",
+               "drilldown" : "Matthew Neleigh",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Mohammad S Anwar",
+               "name" : "Mohammad S Anwar"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Niels van Dijke",
+               "name" : "Niels van Dijke"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Pete Houston",
+               "name" : "Pete Houston"
+            },
+            {
+               "name" : "Peter Campbell Smith",
+               "drilldown" : "Peter Campbell Smith",
+               "y" : 3
+            },
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+               "drilldown" : "Roger Bell_West",
+               "y" : 5
+            },
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+               "y" : 3,
+               "drilldown" : "Simon Green",
+               "name" : "Simon Green"
+            },
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+               "y" : 2,
+               "name" : "Simon Proctor",
+               "drilldown" : "Simon Proctor"
+            },
+            {
+               "y" : 2,
+               "name" : "Steven Wilson",
+               "drilldown" : "Steven Wilson"
+            },
+            {
+               "y" : 4,
+               "name" : "Ulrich Rieke",
+               "drilldown" : "Ulrich Rieke"
+            },
+            {
+               "y" : 3,
+               "name" : "W. Luis Mochan",
+               "drilldown" : "W. Luis Mochan"
+            }
+         ]
+      }
+   ],
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+            "data" : [
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+                  2
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+                  2
+               ]
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+         },
+         {
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+                  "Perl",
+                  2
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+               [
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+               ]
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+            "name" : "Adam Russell"
+         },
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+            "name" : "Alexander Karelas",
+            "id" : "Alexander Karelas",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ]
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+         },
+         {
+            "data" : [
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+                  "Perl",
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+                  1
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+            "data" : [
+               [
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+                  2
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+                  2
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+         },
+         {
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+               [
+                  "Perl",
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+               [
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+                  2
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+               [
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+                  1
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+            "name" : "Bruce Gray"
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+               [
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+            "name" : "Duncan C. White"
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+            "name" : "E. Choroba"
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+               [
+                  "Blog",
+                  2
+               ]
+            ]
+         },
+         {
+            "name" : "Jaldhar H. Vyas",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Jaldhar H. Vyas"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "James Smith",
+            "name" : "James Smith"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  1
+               ]
+            ],
+            "id" : "Jan Krnavek",
+            "name" : "Jan Krnavek"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Laurent Rosenfeld",
+            "name" : "Laurent Rosenfeld"
+         },
+         {
+            "name" : "Luca Ferrari",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  5
+               ]
+            ],
+            "id" : "Luca Ferrari"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Mark Anderson",
+            "name" : "Mark Anderson"
+         },
+         {
+            "id" : "Mark Senn",
+            "data" : [
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+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ],
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+            "id" : "Marton Polgar",
+            "data" : [
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+                  2
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+         },
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+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "Matthew Neleigh"
+         },
+         {
+            "name" : "Mohammad S Anwar",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ],
+               [
+                  "Raku",
+                  1
+               ]
+            ],
+            "id" : "Mohammad S Anwar"
+         },
+         {
+            "name" : "Niels van Dijke",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
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+            "id" : "Niels van Dijke"
+         },
+         {
+            "name" : "Pete Houston",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Pete Houston"
+         },
+         {
+            "id" : "Peter Campbell Smith",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
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+                  "Blog",
+                  1
+               ]
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+         {
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+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Roger Bell_West",
+            "name" : "Roger Bell_West"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Simon Green",
+            "name" : "Simon Green"
+         },
+         {
+            "name" : "Simon Proctor",
+            "id" : "Simon Proctor",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ]
+         },
+         {
+            "name" : "Steven Wilson",
+            "id" : "Steven Wilson",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "id" : "Ulrich Rieke",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "name" : "Ulrich Rieke"
+         },
+         {
+            "name" : "W. Luis Mochan",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "W. Luis Mochan"
+         }
+      ]
+   },
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         },
+         "borderWidth" : 0
+      }
+   },
+   "tooltip" : {
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
+      "followPointer" : 1,
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 147"
+   },
+   "subtitle" : {
+      "text" : "[Champions: 32] Last updated at 2022-01-18 10:05:36 GMT"
+   },
+   "chart" : {
+      "type" : "column"
+   }
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index cdb8c57103..f5944ed26f 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,523 +1,51 @@
 {
+   "xAxis" : {
+      "type" : "category"
+   },
+   "tooltip" : {
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1
+   },
    "subtitle" : {
-      "text" : "[Champions: 32] Last updated at 2022-01-18 09:01:06 GMT"
+      "text" : "[Champions: 1] Last updated at 2022-01-18 10:08:54 GMT"
    },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
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       }
    },
    "series" : [
       {
          "colorByPoint" : 1,
+         "name" : "The Weekly Challenge - 148",
          "data" : [
             {
-               "name" : "Abigail",
-               "y" : 4,
-               "drilldown" : "Abigail"
-            },
-            {
-               "drilldown" : "Adam Russell",
-               "name" : "Adam Russell",
-               "y" : 4
-            },
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-               "name" : "Alexander Karelas",
-               "y" : 1,
-               "drilldown" : "Alexander Karelas"
-            },
-            {
-               "name" : "Alexander Pankoff",
-               "y" : 2,
-               "drilldown" : "Alexander Pankoff"
-            },
-            {
-               "drilldown" : "Arne Sommer",
-               "name" : "Arne Sommer",
-               "y" : 5
-            },
-            {
-               "y" : 4,
-               "name" : "Athanasius",
-               "drilldown" : "Athanasius"
-            },
-            {
-               "drilldown" : "Bruce Gray",
-               "y" : 5,
-               "name" : "Bruce Gray"
-            },
-            {
-               "drilldown" : "Cheok-Yin Fung",
-               "name" : "Cheok-Yin Fung",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Colin Crain",
-               "name" : "Colin Crain",
-               "y" : 2
-            },
-            {
-               "y" : 3,
-               "name" : "Dave Jacoby",
-               "drilldown" : "Dave Jacoby"
-            },
-            {
-               "drilldown" : "Duncan C. White",
-               "name" : "Duncan C. White",
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-               "drilldown" : "E. Choroba"
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