- Added solutions by Mark Senn.

19 files changed, 1534 insertions, 1479 deletions

diff --git a/challenge-146/mark-senn/blog.txt b/challenge-146/mark-senn/blog.txt
new file mode 100644
index 0000000000..03584819da
--- /dev/null
+++ b/challenge-146/mark-senn/blog.txt
@@ -0,0 +1 @@
+https://engineering.purdue.edu/~mark/twc-146-1.pdf
diff --git a/challenge-146/mark-senn/blog1.txt b/challenge-146/mark-senn/blog1.txt
new file mode 100644
index 0000000000..80132e1bbe
--- /dev/null
+++ b/challenge-146/mark-senn/blog1.txt
@@ -0,0 +1 @@
+https://engineering.purdue.edu/~mark/twc-146-2.pdf
diff --git a/challenge-146/mark-senn/raku/ch-1.raku b/challenge-146/mark-senn/raku/ch-1.raku
new file mode 100644
index 0000000000..26089ad900
--- /dev/null
+++ b/challenge-146/mark-senn/raku/ch-1.raku
@@ -0,0 +1 @@
+(1 .. Inf).grep({ .is-prime })[10_000].say;
diff --git a/challenge-146/mark-senn/raku/ch-2.raku b/challenge-146/mark-senn/raku/ch-2.raku
new file mode 100644
index 0000000000..57b71be1b2
--- /dev/null
+++ b/challenge-146/mark-senn/raku/ch-2.raku
@@ -0,0 +1,16 @@
+my $member = $*IN.get;
+
+# Split into numerator and denominator.
+my ($n, $d) = $member.split('/');
+
+say "Input: \$member = '$n/$d'";
+
+for ('Output: parent =', ' and grandparent =') -> $label
+{
+    if    ($n < $d)  { $d = $d - $n;            }
+    elsif ($n == $d) { say "no parent"; exit 1; }
+    else             { $n = $n - $d;            }
+    print "$lable '$n/$d'";
+}
+
+say '';
diff --git a/challenge-146/mark-senn/raku/ch-2a.raku b/challenge-146/mark-senn/raku/ch-2a.raku
new file mode 100644
index 0000000000..6d832070c6
--- /dev/null
+++ b/challenge-146/mark-senn/raku/ch-2a.raku
@@ -0,0 +1,17 @@
+my $member = $*IN.get;
+
+# Split into numerator and denominator.
+my ($n, $d) = $member.split('/');
+
+say "Input: \$member = '$n/$d'";
+
+for ('Output: parent =', ' and grandparent =') -> $label {
+    given ($n <=>  $d) {
+        when -1  { $d = $d - $n;            } # n < d
+        when 0   { say "no parent"; exit 1; } # n = d
+        when 1   { $n = $n - $d;            } # n > d
+    }
+    print "$_ '$n/$d'";
+}
+
+say '';
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 626a12934f..7f356c5fbe 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,18 +1,15 @@
 {
-   "legend" : {
-      "enabled" : 0
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
    "chart" : {
       "type" : "column"
    },
+   "subtitle" : {
+      "text" : "[Champions: 26] Last updated at 2022-01-09 11:57:46 GMT"
+   },
    "drilldown" : {
       "series" : [
          {
+            "id" : "Abigail",
+            "name" : "Abigail",
             "data" : [
                [
                   "Perl",
@@ -22,29 +19,27 @@
                   "Blog",
                   2
                ]
-            ],
-            "name" : "Abigail",
-            "id" : "Abigail"
+            ]
          },
          {
-            "id" : "Andrew Shitov",
-            "name" : "Andrew Shitov",
             "data" : [
                [
                   "Raku",
                   1
                ]
-            ]
+            ],
+            "name" : "Andrew Shitov",
+            "id" : "Andrew Shitov"
          },
          {
+            "id" : "Andrezgz",
+            "name" : "Andrezgz",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "Andrezgz",
-            "id" : "Andrezgz"
+            ]
          },
          {
             "data" : [
@@ -65,6 +60,7 @@
             "id" : "Arne Sommer"
          },
          {
+            "name" : "Athanasius",
             "data" : [
                [
                   "Perl",
@@ -75,11 +71,9 @@
                   2
                ]
             ],
-            "id" : "Athanasius",
-            "name" : "Athanasius"
+            "id" : "Athanasius"
          },
          {
-            "id" : "Dave Jacoby",
             "name" : "Dave Jacoby",
             "data" : [
                [
@@ -90,41 +84,40 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Dave Jacoby"
          },
          {
+            "id" : "Duncan C. White",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Duncan C. White",
             "name" : "Duncan C. White"
          },
          {
-            "name" : "E. Choroba",
-            "id" : "E. Choroba",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "E. Choroba",
+            "id" : "E. Choroba"
          },
          {
-            "name" : "Feng Chang",
             "id" : "Feng Chang",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "name" : "Feng Chang"
          },
          {
-            "name" : "Flavio Poletti",
-            "id" : "Flavio Poletti",
             "data" : [
                [
                   "Perl",
@@ -138,7 +131,9 @@
                   "Blog",
                   2
                ]
-            ]
+            ],
+            "name" : "Flavio Poletti",
+            "id" : "Flavio Poletti"
          },
          {
             "id" : "James Smith",
@@ -155,28 +150,27 @@
             ]
          },
          {
+            "id" : "Jan Krnavek",
+            "name" : "Jan Krnavek",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "name" : "Jan Krnavek",
-            "id" : "Jan Krnavek"
+            ]
          },
          {
+            "name" : "Jorg Sommrey",
             "data" : [
                [
                   "Perl",
                   1
                ]
             ],
-            "id" : "Jorg Sommrey",
-            "name" : "Jorg Sommrey"
+            "id" : "Jorg Sommrey"
          },
          {
             "name" : "Laurent Rosenfeld",
-            "id" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl",
@@ -190,11 +184,10 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Laurent Rosenfeld"
          },
          {
-            "name" : "Luca Ferrari",
-            "id" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -204,17 +197,33 @@
                   "Blog",
                   4
                ]
-            ]
+            ],
+            "name" : "Luca Ferrari",
+            "id" : "Luca Ferrari"
          },
          {
+            "name" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "id" : "Mark Anderson",
-            "name" : "Mark Anderson"
+            "id" : "Mark Anderson"
+         },
+         {
+            "id" : "Mark Senn",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ],
+            "name" : "Mark Senn"
          },
          {
             "data" : [
@@ -227,22 +236,20 @@
                   1
                ]
             ],
-            "id" : "Mohammad S Anwar",
-            "name" : "Mohammad S Anwar"
+            "name" : "Mohammad S Anwar",
+            "id" : "Mohammad S Anwar"
          },
          {
-            "name" : "Niels van Dijke",
-            "id" : "Niels van Dijke",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "Niels van Dijke",
+            "id" : "Niels van Dijke"
          },
          {
-            "name" : "Peter Campbell Smith",
-            "id" : "Peter Campbell Smith",
             "data" : [
                [
                   "Perl",
@@ -252,19 +259,22 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "Peter Campbell Smith",
+            "id" : "Peter Campbell Smith"
          },
          {
-            "id" : "Robert DiCicco",
             "name" : "Robert DiCicco",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Robert DiCicco"
          },
          {
+            "name" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
@@ -279,11 +289,9 @@
                   1
                ]
             ],
-            "id" : "Roger Bell_West",
-            "name" : "Roger Bell_West"
+            "id" : "Roger Bell_West"
          },
          {
-            "id" : "Simon Green",
             "name" : "Simon Green",
             "data" : [
                [
@@ -294,17 +302,18 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Simon Green"
          },
          {
-            "name" : "Simon Proctor",
-            "id" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "name" : "Simon Proctor",
+            "id" : "Simon Proctor"
          },
          {
             "id" : "Ulrich Rieke",
@@ -321,6 +330,8 @@
             ]
          },
          {
+            "id" : "W. Luis Mochan",
+            "name" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -330,24 +341,32 @@
                   "Blog",
                   1
                ]
-            ],
-            "id" : "W. Luis Mochan",
-            "name" : "W. Luis Mochan"
+            ]
          }
       ]
    },
-   "subtitle" : {
-      "text" : "[Champions: 25] Last updated at 2022-01-09 10:25:23 GMT"
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 146"
    },
    "plotOptions" : {
       "series" : {
          "borderWidth" : 0,
          "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
+            "enabled" : 1,
+            "format" : "{point.y}"
          }
       }
    },
+   "tooltip" : {
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1,
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
+   },
    "series" : [
       {
          "name" : "The Weekly Challenge - 146",
@@ -358,13 +377,13 @@
                "name" : "Abigail"
             },
             {
-               "name" : "Andrew Shitov",
+               "y" : 1,
                "drilldown" : "Andrew Shitov",
-               "y" : 1
+               "name" : "Andrew Shitov"
             },
             {
-               "y" : 2,
                "drilldown" : "Andrezgz",
+               "y" : 2,
                "name" : "Andrezgz"
             },
             {
@@ -373,123 +392,123 @@
                "name" : "Arne Sommer"
             },
             {
-               "name" : "Athanasius",
                "drilldown" : "Athanasius",
-               "y" : 4
+               "y" : 4,
+               "name" : "Athanasius"
             },
             {
+               "y" : 3,
                "drilldown" : "Dave Jacoby",
-               "name" : "Dave Jacoby",
-               "y" : 3
+               "name" : "Dave Jacoby"
             },
             {
                "y" : 2,
-               "name" : "Duncan C. White",
-               "drilldown" : "Duncan C. White"
+               "drilldown" : "Duncan C. White",
+               "name" : "Duncan C. White"
             },
             {
+               "y" : 2,
                "drilldown" : "E. Choroba",
-               "name" : "E. Choroba",
-               "y" : 2
+               "name" : "E. Choroba"
             },
             {
+               "drilldown" : "Feng Chang",
                "y" : 2,
-               "name" : "Feng Chang",
-               "drilldown" : "Feng Chang"
+               "name" : "Feng Chang"
             },
             {
-               "name" : "Flavio Poletti",
+               "y" : 6,
                "drilldown" : "Flavio Poletti",
-               "y" : 6
+               "name" : "Flavio Poletti"
             },
             {
-               "name" : "James Smith",
+               "y" : 3,
                "drilldown" : "James Smith",
-               "y" : 3
+               "name" : "James Smith"
             },
             {
                "drilldown" : "Jan Krnavek",
-               "name" : "Jan Krnavek",
-               "y" : 2
+               "y" : 2,
+               "name" : "Jan Krnavek"
             },
             {
+               "y" : 1,
                "drilldown" : "Jorg Sommrey",
-               "name" : "Jorg Sommrey",
-               "y" : 1
+               "name" : "Jorg Sommrey"
             },
             {
-               "y" : 5,
                "name" : "Laurent Rosenfeld",
-               "drilldown" : "Laurent Rosenfeld"
+               "drilldown" : "Laurent Rosenfeld",
+               "y" : 5
             },
             {
-               "name" : "Luca Ferrari",
                "drilldown" : "Luca Ferrari",
-               "y" : 6
+               "y" : 6,
+               "name" : "Luca Ferrari"
             },
             {
                "y" : 2,
-               "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson"
+               "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson"
             },
             {
-               "drilldown" : "Mohammad S Anwar",
-               "name" : "Mohammad S Anwar",
-               "y" : 2
+               "drilldown" : "Mark Senn",
+               "y" : 4,
+               "name" : "Mark Senn"
             },
             {
+               "name" : "Mohammad S Anwar",
                "y" : 2,
+               "drilldown" : "Mohammad S Anwar"
+            },
+            {
                "name" : "Niels van Dijke",
+               "y" : 2,
                "drilldown" : "Niels van Dijke"
             },
             {
                "y" : 3,
-               "name" : "Peter Campbell Smith",
-               "drilldown" : "Peter Campbell Smith"
+               "drilldown" : "Peter Campbell Smith",
+               "name" : "Peter Campbell Smith"
             },
             {
+               "drilldown" : "Robert DiCicco",
                "y" : 2,
-               "name" : "Robert DiCicco",
-               "drilldown" : "Robert DiCicco"
+               "name" : "Robert DiCicco"
             },
             {
-               "drilldown" : "Roger Bell_West",
                "name" : "Roger Bell_West",
-               "y" : 5
+               "y" : 5,
+               "drilldown" : "Roger Bell_West"
             },
             {
-               "drilldown" : "Simon Green",
                "name" : "Simon Green",
-               "y" : 3
+               "y" : 3,
+               "drilldown" : "Simon Green"
             },
             {
-               "y" : 2,
+               "name" : "Simon Proctor",
                "drilldown" : "Simon Proctor",
-               "name" : "Simon Proctor"
+               "y" : 2
             },
             {
                "name" : "Ulrich Rieke",
-               "drilldown" : "Ulrich Rieke",
-               "y" : 4
+               "y" : 4,
+               "drilldown" : "Ulrich Rieke"
             },
             {
-               "name" : "W. Luis Mochan",
+               "y" : 3,
                "drilldown" : "W. Luis Mochan",
-               "y" : 3
+               "name" : "W. Luis Mochan"
             }
          ],
          "colorByPoint" : 1
       }
    ],
+   "legend" : {
+      "enabled" : 0
+   },
    "xAxis" : {
       "type" : "category"
-   },
-   "title" : {
-      "text" : "The Weekly Challenge - 146"
-   },
-   "tooltip" : {
-      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
-      "followPointer" : 1
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 0e18af44f6..0501096812 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,26 +1,38 @@
 {
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
+   },
+   "yAxis" : {
+      "min" : 0,
+      "title" : {
+         "text" : null
+      }
+   },
    "subtitle" : {
-      "text" : "Last updated at 2022-01-09 10:25:23 GMT"
+      "text" : "Last updated at 2022-01-09 11:57:46 GMT"
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "xAxis" : {
+      "type" : "category",
+      "labels" : {
+         "style" : {
+            "fontFamily" : "Verdana, sans-serif",
+            "fontSize" : "13px"
+         }
+      }
+   },
+   "legend" : {
+      "enabled" : "false"
    },
    "series" : [
       {
          "name" : "Contributions",
-         "dataLabels" : {
-            "align" : "right",
-            "rotation" : -90,
-            "color" : "#FFFFFF",
-            "y" : 10,
-            "format" : "{point.y:.0f}",
-            "style" : {
-               "fontSize" : "13px",
-               "fontFamily" : "Verdana, sans-serif"
-            },
-            "enabled" : "true"
-         },
          "data" : [
             [
                "Blog",
-               2165
+               2167
             ],
             [
                "Perl",
@@ -28,36 +40,24 @@
             ],
             [
                "Raku",
-               4243
+               4245
             ]
-         ]
+         ],
+         "dataLabels" : {
+            "align" : "right",
+            "style" : {
+               "fontSize" : "13px",
+               "fontFamily" : "Verdana, sans-serif"
+            },
+            "y" : 10,
+            "format" : "{point.y:.0f}",
+            "color" : "#FFFFFF",
+            "enabled" : "true",
+            "rotation" : -90
+         }
       }
    ],
-   "legend" : {
-      "enabled" : "false"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : null
-      },
-      "min" : 0
-   },
-   "chart" : {
-      "type" : "column"
-   },
    "tooltip" : {
       "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "xAxis" : {
-      "type" : "category",
-      "labels" : {
-         "style" : {
-            "fontFamily" : "Verdana, sans-serif",
-            "fontSize" : "13px"
-         }
-      }
-   },
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 4ee6bb914e..628aebaa92 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -2,22 +2,31 @@
    "title" : {
       "text" : "The Weekly Challenge Language"
    },
-   "xAxis" : {
-      "type" : "category"
-   },
-   "tooltip" : {
-      "headerFormat" : "<span style=\"font-size:11px\"></span>",
-      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>",
-      "followPointer" : "true"
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
+         "borderWidth" : 0
+      }
    },
    "chart" : {
       "type" : "column"
    },
+   "subtitle" : {
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2022-01-09 11:57:46 GMT"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
    "drilldown" : {
       "series" : [
          {
-            "name" : "001",
             "id" : "001",
+            "name" : "001",
             "data" : [
                [
                   "Perl",
@@ -66,8 +75,8 @@
                   9
                ]
             ],
-            "id" : "003",
-            "name" : "003"
+            "name" : "003",
+            "id" : "003"
          },
          {
             "data" : [
@@ -88,8 +97,8 @@
             "id" : "004"
          },
          {
-            "name" : "005",
             "id" : "005",
+            "name" : "005",
             "data" : [
                [
                   "Perl",
@@ -106,8 +115,6 @@
             ]
          },
          {
-            "name" : "006",
-            "id" : "006",
             "data" : [
                [
                   "Perl",
@@ -121,11 +128,13 @@
                   "Blog",
                   7
                ]
-            ]
+            ],
+            "name" : "006",
+            "id" : "006"
          },
          {
-            "name" : "007",
             "id" : "007",
+            "name" : "007",
             "data" : [
                [
                   "Perl",
@@ -142,6 +151,8 @@
             ]
          },
          {
+            "id" : "008",
+            "name" : "008",
             "data" : [
                [
                   "Perl",
@@ -155,12 +166,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "008",
-            "id" : "008"
+            ]
          },
          {
-            "id" : "009",
             "name" : "009",
             "data" : [
                [
@@ -175,9 +183,12 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "id" : "009"
          },
          {
+            "id" : "010",
+            "name" : "010",
             "data" : [
                [
                   "Perl",
@@ -191,11 +202,10 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "010",
-            "name" : "010"
+            ]
          },
          {
+            "name" : "011",
             "data" : [
                [
                   "Perl",
@@ -210,10 +220,11 @@
                   10
                ]
             ],
-            "id" : "011",
-            "name" : "011"
+            "id" : "011"
          },
          {
+            "id" : "012",
+            "name" : "012",
             "data" : [
                [
                   "Perl",
@@ -227,12 +238,9 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "012",
-            "id" : "012"
+            ]
          },
          {
-            "name" : "013",
             "id" : "013",
             "data" : [
                [
@@ -247,9 +255,12 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "name" : "013"
          },
          {
+            "id" : "014",
+            "name" : "014",
             "data" : [
                [
                   "Perl",
@@ -263,11 +274,10 @@
                   "Blog",
                   15
                ]
-            ],
-            "name" : "014",
-            "id" : "014"
+            ]
          },
          {
+            "id" : "015",
             "data" : [
                [
                   "Perl",
@@ -282,11 +292,9 @@
                   15
                ]
             ],
-            "name" : "015",
-            "id" : "015"
+            "name" : "015"
          },
          {
-            "name" : "016",
             "id" : "016",
             "data" : [
                [
@@ -301,9 +309,11 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "name" : "016"
          },
          {
+            "id" : "017",
             "data" : [
                [
                   "Perl",
@@ -318,12 +328,9 @@
                   12
                ]
             ],
-            "name" : "017",
-            "id" : "017"
+            "name" : "017"
          },
          {
-            "id" : "018",
-            "name" : "018",
             "data" : [
                [
                   "Perl",
@@ -337,7 +344,9 @@
                   "Blog",
                   14
                ]
-            ]
+            ],
+            "name" : "018",
+            "id" : "018"
          },
          {
             "data" : [
@@ -354,11 +363,10 @@
                   13
                ]
             ],
-            "id" : "019",
-            "name" : "019"
+            "name" : "019",
+            "id" : "019"
          },
          {
-            "name" : "020",
             "id" : "020",
             "data" : [
                [
@@ -373,9 +381,11 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "name" : "020"
          },
          {
+            "name" : "021",
             "data" : [
                [
                   "Perl",
@@ -390,8 +400,7 @@
                   10
                ]
             ],
-            "id" : "021",
-            "name" : "021"
+            "id" : "021"
          },
          {
             "data" : [
@@ -408,10 +417,11 @@
                   10
                ]
             ],
-            "id" : "022",
-            "name" : "022"
+            "name" : "022",
+            "id" : "022"
          },
          {
+            "name" : "023",
             "data" : [
                [
                   "Perl",
@@ -426,10 +436,10 @@
                   12
                ]
             ],
-            "id" : "023",
-            "name" : "023"
+            "id" : "023"
          },
          {
+            "name" : "024",
             "data" : [
                [
                   "Perl",
@@ -444,12 +454,10 @@
                   11
                ]
             ],
-            "id" : "024",
-            "name" : "024"
+            "id" : "024"
          },