- Added solutions by Cheok-Yin Fung.

14 files changed, 1177 insertions, 1162 deletions

diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index a434a6d61d..742595f96f 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,187 +1,32 @@
 {
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "series" : [
-      {
-         "name" : "The Weekly Challenge - 137",
-         "data" : [
-            {
-               "name" : "Abigail",
-               "y" : 2,
-               "drilldown" : "Abigail"
-            },
-            {
-               "drilldown" : "Andrew Shitov",
-               "y" : 1,
-               "name" : "Andrew Shitov"
-            },
-            {
-               "y" : 5,
-               "name" : "Arne Sommer",
-               "drilldown" : "Arne Sommer"
-            },
-            {
-               "y" : 4,
-               "name" : "Athanasius",
-               "drilldown" : "Athanasius"
-            },
-            {
-               "drilldown" : "Bob Lied",
-               "y" : 2,
-               "name" : "Bob Lied"
-            },
-            {
-               "y" : 2,
-               "name" : "E. Choroba",
-               "drilldown" : "E. Choroba"
-            },
-            {
-               "drilldown" : "Flavio Poletti",
-               "y" : 6,
-               "name" : "Flavio Poletti"
-            },
-            {
-               "drilldown" : "James Smith",
-               "y" : 3,
-               "name" : "James Smith"
-            },
-            {
-               "y" : 2,
-               "name" : "Jan Krnavek",
-               "drilldown" : "Jan Krnavek"
-            },
-            {
-               "drilldown" : "Jorg Sommrey",
-               "name" : "Jorg Sommrey",
-               "y" : 1
-            },
-            {
-               "drilldown" : "Laurent Rosenfeld",
-               "y" : 5,
-               "name" : "Laurent Rosenfeld"
-            },
-            {
-               "name" : "Lubos Kolouch",
-               "y" : 2,
-               "drilldown" : "Lubos Kolouch"
-            },
-            {
-               "name" : "Luca Ferrari",
-               "y" : 6,
-               "drilldown" : "Luca Ferrari"
-            },
-            {
-               "drilldown" : "Mark Anderson",
-               "name" : "Mark Anderson",
-               "y" : 2
-            },
-            {
-               "y" : 2,
-               "name" : "Matthew Neleigh",
-               "drilldown" : "Matthew Neleigh"
-            },
-            {
-               "drilldown" : "Mohammad S Anwar",
-               "name" : "Mohammad S Anwar",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Niels van Dijke",
-               "name" : "Niels van Dijke",
-               "y" : 2
-            },
-            {
-               "name" : "Olivier Delouya",
-               "y" : 2,
-               "drilldown" : "Olivier Delouya"
-            },
-            {
-               "name" : "Paulo Custodio",
-               "y" : 2,
-               "drilldown" : "Paulo Custodio"
-            },
-            {
-               "name" : "Robert DiCicco",
-               "y" : 2,
-               "drilldown" : "Robert DiCicco"
-            },
-            {
-               "y" : 5,
-               "name" : "Roger Bell_West",
-               "drilldown" : "Roger Bell_West"
-            },
-            {
-               "name" : "Simon Green",
-               "y" : 3,
-               "drilldown" : "Simon Green"
-            },
-            {
-               "drilldown" : "Steven Wilson",
-               "y" : 2,
-               "name" : "Steven Wilson"
-            },
-            {
-               "y" : 4,
-               "name" : "Ulrich Rieke",
-               "drilldown" : "Ulrich Rieke"
-            },
-            {
-               "drilldown" : "W. Luis Mochan",
-               "y" : 3,
-               "name" : "W. Luis Mochan"
-            },
-            {
-               "drilldown" : "Wanderdoc",
-               "name" : "Wanderdoc",
-               "y" : 2
-            }
-         ],
-         "colorByPoint" : 1
-      }
-   ],
-   "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
-   },
-   "xAxis" : {
-      "type" : "category"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 26] Last updated at 2021-11-07 17:48:45 GMT"
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "title" : {
-      "text" : "The Weekly Challenge - 137"
-   },
    "plotOptions" : {
       "series" : {
          "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
+            "enabled" : 1,
+            "format" : "{point.y}"
          },
          "borderWidth" : 0
       }
    },
-   "legend" : {
-      "enabled" : 0
+   "chart" : {
+      "type" : "column"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
    },
    "drilldown" : {
       "series" : [
          {
-            "name" : "Abigail",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Abigail"
+            "id" : "Abigail",
+            "name" : "Abigail"
          },
          {
             "name" : "Andrew Shitov",
@@ -194,7 +39,6 @@
             ]
          },
          {
-            "name" : "Arne Sommer",
             "data" : [
                [
                   "Perl",
@@ -209,7 +53,8 @@
                   1
                ]
             ],
-            "id" : "Arne Sommer"
+            "id" : "Arne Sommer",
+            "name" : "Arne Sommer"
          },
          {
             "name" : "Athanasius",
@@ -226,26 +71,37 @@
             "id" : "Athanasius"
          },
          {
-            "id" : "Bob Lied",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
+            "id" : "Bob Lied",
             "name" : "Bob Lied"
          },
          {
-            "id" : "E. Choroba",
+            "id" : "Cheok-Yin Fung",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "Cheok-Yin Fung"
+         },
+         {
+            "name" : "E. Choroba",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "E. Choroba"
+            "id" : "E. Choroba"
          },
          {
+            "name" : "Flavio Poletti",
             "data" : [
                [
                   "Perl",
@@ -260,8 +116,7 @@
                   2
                ]
             ],
-            "id" : "Flavio Poletti",
-            "name" : "Flavio Poletti"
+            "id" : "Flavio Poletti"
          },
          {
             "id" : "James Smith",
@@ -278,26 +133,27 @@
             "name" : "James Smith"
          },
          {
-            "id" : "Jan Krnavek",
+            "name" : "Jan Krnavek",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "name" : "Jan Krnavek"
+            "id" : "Jan Krnavek"
          },
          {
             "name" : "Jorg Sommrey",
+            "id" : "Jorg Sommrey",
             "data" : [
                [
                   "Perl",
                   1
                ]
-            ],
-            "id" : "Jorg Sommrey"
+            ]
          },
          {
+            "name" : "Laurent Rosenfeld",
             "id" : "Laurent Rosenfeld",
             "data" : [
                [
@@ -312,20 +168,21 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Laurent Rosenfeld"
+            ]
          },
          {
+            "id" : "Lubos Kolouch",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Lubos Kolouch",
             "name" : "Lubos Kolouch"
          },
          {
+            "name" : "Luca Ferrari",
+            "id" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -335,32 +192,29 @@
                   "Blog",
                   4
                ]
-            ],
-            "id" : "Luca Ferrari",
-            "name" : "Luca Ferrari"
+            ]
          },
          {
-            "name" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "id" : "Mark Anderson"
+            "id" : "Mark Anderson",
+            "name" : "Mark Anderson"
          },
          {
-            "name" : "Matthew Neleigh",
-            "id" : "Matthew Neleigh",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Matthew Neleigh",
+            "name" : "Matthew Neleigh"
          },
          {
-            "name" : "Mohammad S Anwar",
             "id" : "Mohammad S Anwar",
             "data" : [
                [
@@ -371,7 +225,8 @@
                   "Raku",
                   1
                ]
-            ]
+            ],
+            "name" : "Mohammad S Anwar"
          },
          {
             "id" : "Niels van Dijke",
@@ -384,36 +239,38 @@
             "name" : "Niels van Dijke"
          },
          {
+            "id" : "Olivier Delouya",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Olivier Delouya",
             "name" : "Olivier Delouya"
          },
          {
+            "id" : "Paulo Custodio",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Paulo Custodio",
             "name" : "Paulo Custodio"
          },
          {
+            "name" : "Robert DiCicco",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Robert DiCicco",
-            "name" : "Robert DiCicco"
+            "id" : "Robert DiCicco"
          },
          {
+            "name" : "Roger Bell_West",
+            "id" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
@@ -427,12 +284,10 @@
                   "Blog",
                   1
                ]
-            ],
-            "id" : "Roger Bell_West",
-            "name" : "Roger Bell_West"
+            ]
          },
          {
-            "id" : "Simon Green",
+            "name" : "Simon Green",
             "data" : [
                [
                   "Perl",
@@ -443,19 +298,20 @@
                   1
                ]
             ],
-            "name" : "Simon Green"
+            "id" : "Simon Green"
          },
          {
             "name" : "Steven Wilson",
-            "id" : "Steven Wilson",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Steven Wilson"
          },
          {
+            "id" : "Ulrich Rieke",
             "data" : [
                [
                   "Perl",
@@ -466,7 +322,6 @@
                   2
                ]
             ],
-            "id" : "Ulrich Rieke",
             "name" : "Ulrich Rieke"
          },
          {
@@ -494,5 +349,165 @@
             "name" : "Wanderdoc"
          }
       ]
+   },
+   "legend" : {
+      "enabled" : 0
+   },
+   "tooltip" : {
+      "followPointer" : 1,
+      "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/>"
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "series" : [
+      {
+         "colorByPoint" : 1,
+         "name" : "The Weekly Challenge - 137",
+         "data" : [
+            {
+               "name" : "Abigail",
+               "y" : 2,
+               "drilldown" : "Abigail"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Andrew Shitov",
+               "name" : "Andrew Shitov"
+            },
+            {
+               "name" : "Arne Sommer",
+               "drilldown" : "Arne Sommer",
+               "y" : 5
+            },
+            {
+               "name" : "Athanasius",
+               "drilldown" : "Athanasius",
+               "y" : 4
+            },
+            {
+               "name" : "Bob Lied",
+               "y" : 2,
+               "drilldown" : "Bob Lied"
+            },
+            {
+               "drilldown" : "Cheok-Yin Fung",
+               "y" : 2,
+               "name" : "Cheok-Yin Fung"
+            },
+            {
+               "name" : "E. Choroba",
+               "y" : 2,
+               "drilldown" : "E. Choroba"
+            },
+            {
+               "name" : "Flavio Poletti",
+               "drilldown" : "Flavio Poletti",
+               "y" : 6
+            },
+            {
+               "y" : 3,
+               "drilldown" : "James Smith",
+               "name" : "James Smith"
+            },
+            {
+               "name" : "Jan Krnavek",
+               "y" : 2,
+               "drilldown" : "Jan Krnavek"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Jorg Sommrey",
+               "name" : "Jorg Sommrey"
+            },
+            {
+               "y" : 5,
+               "drilldown" : "Laurent Rosenfeld",
+               "name" : "Laurent Rosenfeld"
+            },
+            {
+               "drilldown" : "Lubos Kolouch",
+               "y" : 2,
+               "name" : "Lubos Kolouch"
+            },
+            {
+               "drilldown" : "Luca Ferrari",
+               "y" : 6,
+               "name" : "Luca Ferrari"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson"
+            },
+            {
+               "drilldown" : "Matthew Neleigh",
+               "y" : 2,
+               "name" : "Matthew Neleigh"
+            },
+            {
+               "name" : "Mohammad S Anwar",
+               "drilldown" : "Mohammad S Anwar",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Niels van Dijke",
+               "name" : "Niels van Dijke"
+            },
+            {
+               "name" : "Olivier Delouya",
+               "drilldown" : "Olivier Delouya",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Paulo Custodio",
+               "name" : "Paulo Custodio"
+            },
+            {
+               "drilldown" : "Robert DiCicco",
+               "y" : 2,
+               "name" : "Robert DiCicco"
+            },
+            {
+               "name" : "Roger Bell_West",
+               "drilldown" : "Roger Bell_West",
+               "y" : 5
+            },
+            {
+               "name" : "Simon Green",
+               "drilldown" : "Simon Green",
+               "y" : 3
+            },
+            {
+               "name" : "Steven Wilson",
+               "drilldown" : "Steven Wilson",
+               "y" : 2
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Ulrich Rieke",
+               "name" : "Ulrich Rieke"
+            },
+            {
+               "name" : "W. Luis Mochan",
+               "y" : 3,
+               "drilldown" : "W. Luis Mochan"
+            },
+            {
+               "name" : "Wanderdoc",
+               "drilldown" : "Wanderdoc",
+               "y" : 2
+            }
+         ]
+      }
+   ],
+   "subtitle" : {
+      "text" : "[Champions: 27] Last updated at 2021-11-07 18:08:13 GMT"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 137"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index ce8892651d..de8b422da7 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,29 +1,30 @@
 {
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
    "yAxis" : {
       "min" : 0,
       "title" : {
          "text" : null
       }
    },
+   "chart" : {
+      "type" : "column"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
+   },
    "series" : [
       {
+         "name" : "Contributions",
          "dataLabels" : {
+            "format" : "{point.y:.0f}",
+            "enabled" : "true",
             "style" : {
                "fontFamily" : "Verdana, sans-serif",
                "fontSize" : "13px"
             },
-            "align" : "right",
-            "rotation" : -90,
-            "enabled" : "true",
             "y" : 10,
-            "format" : "{point.y:.0f}",
-            "color" : "#FFFFFF"
+            "color" : "#FFFFFF",
+            "align" : "right",
+            "rotation" : -90
          },
          "data" : [
             [
@@ -32,32 +33,31 @@
             ],
             [
                "Perl",
-               6573
+               6575
             ],
             [
                "Raku",
                3988
             ]
-         ],
-         "name" : "Contributions"
+         ]
       }
    ],
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
+   "subtitle" : {
+      "text" : "Last updated at 2021-11-07 18:08:13 GMT"
    },
    "xAxis" : {
-      "type" : "category",
       "labels" : {
          "style" : {
-            "fontFamily" : "Verdana, sans-serif",
-            "fontSize" : "13px"
+            "fontSize" : "13px",
+            "fontFamily" : "Verdana, sans-serif"
          }
-      }
+      },
+      "type" : "category"
    },
-   "subtitle" : {
-      "text" : "Last updated at 2021-11-07 17:48:45 GMT"
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
    },
-   "chart" : {
-      "type" : "column"
+   "legend" : {
+      "enabled" : "false"
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 5e446d8365..03c1eba545 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,11 +1,19 @@
 {
-   "legend" : {
-      "enabled" : "false"
+   "chart" : {
+      "type" : "column"
+   },
+   "plotOptions" : {
+      "series" : {
+         "borderWidth" : 0,
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         }
+      }
    },
    "drilldown" : {
       "series" : [
          {
-            "name" : "001",
             "data" : [
                [
                   "Perl",
@@ -20,9 +28,11 @@
                   11
                ]
             ],
-            "id" : "001"
+            "id" : "001",
+            "name" : "001"
          },
          {
+            "name" : "002",
             "data" : [
                [
                   "Perl",
@@ -37,12 +47,10 @@
                   10
                ]
             ],
-            "id" : "002",
-            "name" : "002"
+            "id" : "002"
          },
          {
             "name" : "003",
-            "id" : "003",
             "data" : [
                [
                   "Perl",
@@ -56,10 +64,10 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "003"
          },
          {
-            "id" : "004",
             "data" : [
                [
                   "Perl",
@@ -74,6 +82,7 @@
                   10
                ]
             ],
+            "id" : "004",
             "name" : "004"
          },
          {
@@ -95,6 +104,7 @@
             "name" : "005"
          },
          {
+            "name" : "006",
             "id" : "006",
             "data" : [
                [
@@ -109,12 +119,9 @@
                   "Blog",
                   7
                ]
-            ],
-            "name" : "006"
+            ]
          },
          {
-            "name" : "007",
-            "id" : "007",
             "data" : [
                [
                   "Perl",
@@ -128,10 +135,13 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "id" : "007",
+            "name" : "007"
          },
          {
             "name" : "008",
+            "id" : "008",
             "data" : [
                [
                   "Perl",
@@ -145,11 +155,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "008"
+            ]
          },
          {
-            "name" : "009",
             "data" : [
                [
                   "Perl",
@@ -164,10 +172,11 @@
                   13
                ]
             ],
-            "id" : "009"
+            "id" : "009",
+            "name" : "009"
          },
          {
-            "name" : "010",
+            "id" : "010",
             "data" : [
                [
                   "Perl",
@@ -182,11 +191,10 @@
                   11
                ]
             ],
-            "id" : "010"
+            "name" : "010"
          },
          {
             "name" : "011",
-            "id" : "011",
             "data" : [
                [
                   "Perl",
@@ -200,9 +208,11 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "id" : "011"
          },
          {
+            "name" : "012",
             "id" : "012",
             "data" : [
                [
@@ -217,11 +227,11 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "012"
+            ]
          },
          {
             "name" : "013",
+            "id" : "013",
             "data" : [
                [
                   "Perl",
@@ -235,12 +245,9 @@
                   "Blog",
                   13
                ]
-            ],
-            "id" : "013"
+            ]
          },
          {
-            "name" : "014",
-            "id" : "014",
             "data" : [
                [
                   "Perl",
@@ -254,9 +261,12 @@
                   "Blog",
                   15
                ]
-            ]
+            ],
+            "id" : "014",
+            "name" : "014"
          },
          {
+            "name" : "015",
             "data" : [
                [
                   "Perl",
@@ -271,10 +281,10 @@
                   15
                ]
             ],
-            "id" : "015",
-            "name" : "015"
+            "id" : "015"
          },
          {
+            "id" : "016",
             "data" : [
                [
                   "Perl",
@@ -289,11 +299,10 @@
                   12
                ]
             ],
-            "id" : "016",
             "name" : "016"
          },
          {
-            "name" : "017",
+            "id" : "017",
             "data" : [
                [
                   "Perl",
@@ -308,10 +317,9 @@
                   12
                ]
             ],
-            "id" : "017"
+            "name" : "017"
          },
          {
-            "name" : "018",
             "data" : [
                [
                   "Perl",
@@ -326,7 +334,8 @@
                   14
                ]
             ],
-            "id" : "018"
+            "id" : "018",
+            "name" : "018"
          },
          {
             "name" : "019",
@@ -365,6 +374,8 @@
             "id" : "020"
          },
          {
+            "name" : "021",
+            "id" : "021",
             "data" : [
                [
                   "Perl",
@@ -378,12 +389,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "021",
-            "name" : "021"
+            ]
          },
          {
-            "name" : "022",
             "data" : [
                [
                   "Perl",
@@ -398,9 +406,11 @@
                   10
                ]
             ],
-            "id" : "022"
+            "id" : "022",
+            "name" : "022"
          },
          {
+            "name" : "023",
             "id" : "023",
             "data" : [
                [
@@ -415,8 +425,7 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "023"
+            ]
          },
          {
             "data" : [
@@ -438,7 +447,6 @@
          },
          {
             "name" : "025",
-            "id" : "025",
             "data" : [
                [
                   "Perl",
@@ -452,7 +460,8 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "025"
          },
          {
             "id" : "026",
@@ -473,7 +482,6 @@
             "name" : "026"
          },
          {
-            "name" : "027",
             "id" : "027",
             "data" : [
                [
@@ -488,10 +496,11 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "name" : "027"
          },
          {
-            "name" : "028",
+            "id" : "028",
             "data" : [
                [
                   "Perl",
@@ -506,11 +515,9 @@
                   9
                ]
             ],
-            "id" : "028"
+            "name" : "028"
          },
          {
-            "name" : "029",
-            "id" : "029",
             "data" : [
                [
                   "Perl",
@@ -524,10 +531,11 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "029",
+            "name" : "029"
          },
          {
-            "name" : "030",
             "data" : [
                [
                   "Perl",
@@ -542,9 +550,11 @@
                   10
                ]
             ],
-            "id" : "030"
+            "id" : "030",
+            "name" : "030"
          },
          {
+            "name" : "031",
             "id" : "031",
             "data" : [
                [
@@ -559,8 +569,7 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "031"
+            ]
          },
          {
             "id" : "032",
@@ -581,6 +590,7 @@
             "name" : "032"
          },
          {
+            "name" : "033",
             "id" : "033",
             "data" : [
                [
@@ -595,8 +605,7 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "033"
+            ]