- Added solutions by Donald Hunter.

14 files changed, 1065 insertions, 1011 deletions

diff --git a/challenge-067/donald-hunter/blog.txt b/challenge-067/donald-hunter/blog.txt
new file mode 100644
index 0000000000..3d09781878
--- /dev/null
+++ b/challenge-067/donald-hunter/blog.txt
@@ -0,0 +1 @@
+https://donaldh.wtf/2020/06/combinations/
diff --git a/challenge-067/donald-hunter/raku/ch-1.p6 b/challenge-067/donald-hunter/raku/ch-1.p6
new file mode 100644
index 0000000000..6f1e25d8d0
--- /dev/null
+++ b/challenge-067/donald-hunter/raku/ch-1.p6
@@ -0,0 +1,16 @@
+sub number-combinations($m, $n, :$width = 96) {
+      my @combinations =
+          (1..$m).combinations($n)           # generate the combinations
+                 .map({ "[{.join: ','}]" }); # format each combination
+
+      my $per-line = $width div @combinations.map({ .chars + 2 }).max;
+
+      ('[ ' ~
+          @combinations
+               .rotor($per-line, :partial)   # split into n per line
+               .map({ .join(', ') })         # join items on same line
+               .join(",\n  ")                # join the lines
+       ~ ' ]').say
+}
+
+number-combinations(8, 3)
diff --git a/challenge-067/donald-hunter/raku/ch-2.p6 b/challenge-067/donald-hunter/raku/ch-2.p6
new file mode 100644
index 0000000000..30a49099dc
--- /dev/null
+++ b/challenge-067/donald-hunter/raku/ch-2.p6
@@ -0,0 +1,18 @@
+sub phone-combinations(Str $digits) {
+        my %keys =
+            1 => < _ , @ >,   2 => < a b c >, 3 => < d e f >,
+            4 => < g h i >,   5 => < j k l >, 6 => < m n o >,
+            7 => < p q r s >, 8 => < t u v >, 9 => < w x y z >,
+            '*' => (' ',);
+
+        ('[' ~
+         (
+             [X~] %keys{ $digits.comb }
+         )
+         .map({ "\"{$_}\"" })
+         .rotor(10, :partial).map({ .join(', ') })
+         .join("\n ")
+         ~ ']').say
+}
+
+phone-combinations '417'
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 467998e1ee..97a12f4202 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,113 +1,51 @@
 {
    "plotOptions" : {
       "series" : {
-         "borderWidth" : 0,
          "dataLabels" : {
             "enabled" : 1,
             "format" : "{point.y}"
-         }
-      }
-   },
-   "series" : [
-      {
-         "name" : "Perl Weekly Challenge - 067",
-         "data" : [
-            {
-               "name" : "Andrew Shitov",
-               "y" : 2,
-               "drilldown" : "Andrew Shitov"
-            },
-            {
-               "y" : 2,
-               "name" : "Dave Jacoby",
-               "drilldown" : "Dave Jacoby"
-            },
-            {
-               "drilldown" : "Leo Manfredi",
-               "y" : 1,
-               "name" : "Leo Manfredi"
-            },
-            {
-               "drilldown" : "Luca Ferrari",
-               "y" : 4,
-               "name" : "Luca Ferrari"
-            },
-            {
-               "name" : "Mark Anderson",
-               "y" : 2,
-               "drilldown" : "Mark Anderson"
-            },
-            {
-               "drilldown" : "Niels van Dijke",
-               "name" : "Niels van Dijke",
-               "y" : 2
-            },
-            {
-               "y" : 2,
-               "name" : "Roger Bell_West",
-               "drilldown" : "Roger Bell_West"
-            },
-            {
-               "name" : "Simon Miner",
-               "y" : 2,
-               "drilldown" : "Simon Miner"
-            },
-            {
-               "name" : "Simon Proctor",
-               "y" : 2,
-               "drilldown" : "Simon Proctor"
-            },
-            {
-               "y" : 3,
-               "name" : "Ulrich Rieke",
-               "drilldown" : "Ulrich Rieke"
-            },
-            {
-               "drilldown" : "Wanderdoc",
-               "name" : "Wanderdoc",
-               "y" : 2
-            }
-         ],
-         "colorByPoint" : 1
+         },
+         "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/>"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 11] Last updated at 2020-06-30 09:54:12 GMT"
-   },
-   "title" : {
-      "text" : "Perl Weekly Challenge - 067"
    },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
+   "legend" : {
+      "enabled" : 0
    },
    "drilldown" : {
       "series" : [
          {
+            "name" : "Andrew Shitov",
+            "id" : "Andrew Shitov",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "id" : "Andrew Shitov",
-            "name" : "Andrew Shitov"
+            ]
          },
          {
             "name" : "Dave Jacoby",
+            "id" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
                   2
                ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
             ],
-            "id" : "Dave Jacoby"
+            "id" : "Donald Hunter",
+            "name" : "Donald Hunter"
          },
          {
             "id" : "Leo Manfredi",
@@ -120,8 +58,6 @@
             "name" : "Leo Manfredi"
          },
          {
-            "name" : "Luca Ferrari",
-            "id" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -131,17 +67,19 @@
                   "Blog",
                   2
                ]
-            ]
+            ],
+            "id" : "Luca Ferrari",
+            "name" : "Luca Ferrari"
          },
          {
-            "name" : "Mark Anderson",
-            "id" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "id" : "Mark Anderson",
+            "name" : "Mark Anderson"
          },
          {
             "name" : "Niels van Dijke",
@@ -155,36 +93,36 @@
          },
          {
             "name" : "Roger Bell_West",
-            "id" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Roger Bell_West"
          },
          {
-            "name" : "Simon Miner",
             "id" : "Simon Miner",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "Simon Miner"
          },
          {
             "name" : "Simon Proctor",
+            "id" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "id" : "Simon Proctor"
+            ]
          },
          {
-            "name" : "Ulrich Rieke",
+            "id" : "Ulrich Rieke",
             "data" : [
                [
                   "Perl",
@@ -195,27 +133,108 @@
                   2
                ]
             ],
-            "id" : "Ulrich Rieke"
+            "name" : "Ulrich Rieke"
          },
          {
+            "id" : "Wanderdoc",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Wanderdoc",
             "name" : "Wanderdoc"
          }
       ]
    },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "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
+   },
    "xAxis" : {
       "type" : "category"
    },
    "chart" : {
       "type" : "column"
    },
-   "legend" : {
-      "enabled" : 0
-   }
+   "subtitle" : {
+      "text" : "[Champions: 12] Last updated at 2020-06-30 10:17:33 GMT"
+   },
+   "title" : {
+      "text" : "Perl Weekly Challenge - 067"
+   },
+   "series" : [
+      {
+         "data" : [
+            {
+               "drilldown" : "Andrew Shitov",
+               "name" : "Andrew Shitov",
+               "y" : 2
+            },
+            {
+               "name" : "Dave Jacoby",
+               "y" : 2,
+               "drilldown" : "Dave Jacoby"
+            },
+            {
+               "y" : 3,
+               "name" : "Donald Hunter",
+               "drilldown" : "Donald Hunter"
+            },
+            {
+               "drilldown" : "Leo Manfredi",
+               "y" : 1,
+               "name" : "Leo Manfredi"
+            },
+            {
+               "drilldown" : "Luca Ferrari",
+               "y" : 4,
+               "name" : "Luca Ferrari"
+            },
+            {
+               "drilldown" : "Mark Anderson",
+               "y" : 2,
+               "name" : "Mark Anderson"
+            },
+            {
+               "drilldown" : "Niels van Dijke",
+               "y" : 2,
+               "name" : "Niels van Dijke"
+            },
+            {
+               "drilldown" : "Roger Bell_West",
+               "y" : 2,
+               "name" : "Roger Bell_West"
+            },
+            {
+               "drilldown" : "Simon Miner",
+               "y" : 2,
+               "name" : "Simon Miner"
+            },
+            {
+               "drilldown" : "Simon Proctor",
+               "y" : 2,
+               "name" : "Simon Proctor"
+            },
+            {
+               "drilldown" : "Ulrich Rieke",
+               "y" : 3,
+               "name" : "Ulrich Rieke"
+            },
+            {
+               "name" : "Wanderdoc",
+               "y" : 2,
+               "drilldown" : "Wanderdoc"
+            }
+         ],
+         "colorByPoint" : 1,
+         "name" : "Perl Weekly Challenge - 067"
+      }
+   ]
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index a2361bf3ce..e840af8702 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,11 +1,16 @@
 {
+   "title" : {
+      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
+   },
+   "subtitle" : {
+      "text" : "Last updated at 2020-06-30 10:17:33 GMT"
+   },
    "series" : [
       {
-         "name" : "Contributions",
          "data" : [
             [
                "Blog",
-               776
+               777
             ],
             [
                "Perl",
@@ -13,38 +18,30 @@
             ],
             [
                "Raku",
-               1761
+               1763
             ]
          ],
          "dataLabels" : {
-            "style" : {
-               "fontSize" : "13px",
-               "fontFamily" : "Verdana, sans-serif"
-            },
-            "align" : "right",
+            "format" : "{point.y:.0f}",
+            "enabled" : "true",
             "rotation" : -90,
             "y" : 10,
             "color" : "#FFFFFF",
-            "format" : "{point.y:.0f}",
-            "enabled" : "true"
-         }
+            "align" : "right",
+            "style" : {
+               "fontSize" : "13px",
+               "fontFamily" : "Verdana, sans-serif"
+            }
+         },
+         "name" : "Contributions"
       }
    ],
-   "title" : {
-      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : null
-      },
-      "min" : 0
+   "chart" : {
+      "type" : "column"
    },
    "tooltip" : {
       "pointFormat" : "<b>{point.y:.0f}</b>"
    },
-   "subtitle" : {
-      "text" : "Last updated at 2020-06-30 09:54:12 GMT"
-   },
    "xAxis" : {
       "type" : "category",
       "labels" : {
@@ -57,7 +54,10 @@
    "legend" : {
       "enabled" : "false"
    },
-   "chart" : {
-      "type" : "column"
+   "yAxis" : {
+      "title" : {
+         "text" : null
+      },
+      "min" : 0
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 15b78237be..5877afe77d 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,11 +1,7 @@
 {
-   "xAxis" : {
-      "type" : "category"
-   },
    "drilldown" : {
       "series" : [
          {
-            "name" : "001",
             "data" : [
                [
                   "Perl",
@@ -20,11 +16,10 @@
                   11
                ]
             ],
-            "id" : "001"
+            "id" : "001",
+            "name" : "001"
          },
          {
-            "name" : "002",
-            "id" : "002",
             "data" : [
                [
                   "Perl",
@@ -38,7 +33,9 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "id" : "002",
+            "name" : "002"
          },
          {
             "id" : "003",
@@ -59,6 +56,8 @@
             "name" : "003"
          },
          {
+            "name" : "004",
+            "id" : "004",
             "data" : [
                [
                   "Perl",
@@ -72,13 +71,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "004",
-            "name" : "004"
+            ]
          },
          {
-            "name" : "005",
-            "id" : "005",
             "data" : [
                [
                   "Perl",
@@ -92,10 +87,13 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "005",
+            "name" : "005"
          },
          {
             "name" : "006",
+            "id" : "006",
             "data" : [
                [
                   "Perl",
@@ -109,11 +107,10 @@
                   "Blog",
                   7
                ]
-            ],
-            "id" : "006"
+            ]
          },
          {
-            "id" : "007",
+            "name" : "007",
             "data" : [
                [
                   "Perl",
@@ -128,10 +125,10 @@
                   10
                ]
             ],
-            "name" : "007"
+            "id" : "007"
          },
          {
-            "name" : "008",
+            "id" : "008",
             "data" : [
                [
                   "Perl",
@@ -146,7 +143,7 @@
                   12
                ]
             ],
-            "id" : "008"
+            "name" : "008"
          },
          {
             "name" : "009",
@@ -168,7 +165,6 @@
          },
          {
             "name" : "010",
-            "id" : "010",
             "data" : [
                [
                   "Perl",
@@ -182,9 +178,12 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "id" : "010"
          },
          {
+            "name" : "011",
+            "id" : "011",
             "data" : [
                [
                   "Perl",
@@ -198,12 +197,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "011",
-            "name" : "011"
+            ]
          },
          {
-            "id" : "012",
             "data" : [
                [
                   "Perl",
@@ -218,10 +214,10 @@
                   11
                ]
             ],
+            "id" : "012",
             "name" : "012"
          },
          {
-            "name" : "013",
             "data" : [
                [
                   "Perl",
@@ -236,9 +232,12 @@
                   13
                ]
             ],
-            "id" : "013"
+            "id" : "013",
+            "name" : "013"
          },
          {
+            "name" : "014",
+            "id" : "014",
             "data" : [
                [
                   "Perl",
@@ -252,9 +251,7 @@
                   "Blog",
                   15
                ]
-            ],
-            "id" : "014",
-            "name" : "014"
+            ]
          },
          {
             "name" : "015",
@@ -293,8 +290,6 @@
             ]
          },
          {
-            "name" : "017",
-            "id" : "017",
             "data" : [
                [
                   "Perl",
@@ -308,9 +303,13 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "017",
+            "name" : "017"
          },
          {
+            "name" : "018",
+            "id" : "018",
             "data" : [
                [
                   "Perl",
@@ -324,11 +323,10 @@
                   "Blog",
                   14
                ]
-            ],
-            "id" : "018",
-            "name" : "018"
+            ]
          },
          {
+            "name" : "019",
             "data" : [
                [
                   "Perl",
@@ -343,11 +341,9 @@
                   13
                ]
             ],
-            "id" : "019",
-            "name" : "019"
+            "id" : "019"
          },
          {
-            "name" : "020",
             "id" : "020",
             "data" : [
                [
@@ -362,10 +358,11 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "name" : "020"
          },
          {
-            "id" : "021",
+            "name" : "021",
             "data" : [
                [
                   "Perl",
@@ -380,10 +377,9 @@
                   10
                ]
             ],
-            "name" : "021"
+            "id" : "021"
          },
          {
-            "id" : "022",
             "data" : [
                [
                   "Perl",
@@ -398,10 +394,11 @@
                   10
                ]
             ],
+            "id" : "022",
             "name" : "022"
          },
          {
-            "id" : "023",
+            "name" : "023",
             "data" : [
                [
                   "Perl",
@@ -416,7 +413,7 @@
                   12
                ]
             ],
-            "name" : "023"
+            "id" : "023"
          },
          {
             "name" : "024",
@@ -437,6 +434,7 @@
             "id" : "024"
          },
          {
+            "name" : "025",
             "id" : "025",
             "data" : [
                [
@@ -451,11 +449,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "025"
+            ]
          },
          {
-            "name" : "026",
             "id" : "026",
             "data" : [
                [
@@ -470,11 +466,11 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "026"
          },
          {
             "name" : "027",
-            "id" : "027",
             "data" : [
                [
                   "Perl",
@@ -488,7 +484,8 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "027"
          },
          {
             "id" : "028",
@@ -509,7 +506,7 @@
             "name" : "028"
          },
          {
-            "id" : "029",
+            "name" : "029",
             "data" : [
                [
                   "Perl",
@@ -524,9 +521,10 @@
                   12
                ]
             ],
-            "name" : "029"
+            "id" : "029"
          },
          {
+            "name" : "030",
             "id" : "030",
             "data" : [
                [
@@ -541,12 +539,10 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "030"
+            ]
          },
          {
             "name" : "031",
-            "id" : "031",
             "data" : [
                [
                   "Perl",
@@ -560,7 +556,8 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "031"
          },
          {
             "data" : [
@@ -599,7 +596,6 @@
             ]
          },
          {
-            "name" : "034",
             "id" : "034",
             "data" : [
                [
@@ -614,11 +610,11 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "034"
          },
          {
             "name" : "035",
-            "id" : "035",
             "data" : [
                [
                   "Perl",
@@ -632,11 +628,11 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "035"
          },
          {
             "name" : "036",
-            "id" : "036",
             "data" : [
                [
                   "Perl",
@@ -650,10 +646,10 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "id" : "036"
          },
          {
-            "name" : "037",
             "data" : [
                [
                   "Perl",
@@ -668,9 +664,11 @@
                   9
                ]
             ],
-            "id" : "037"
+            "id" : "037",
+            "name" : "037"
          },
          {
+            "name" : "038",
             "data" : [
                [
                   "Perl",
@@ -685,10 +683,10 @@
                   12
                ]
             ],
-            "id" : "038",
-            "name" : "038"
+            "id" : "038"
          },
          {
+            "id" : "039",
             "data" : [
                [
                   "Perl",
@@ -703,10 +701,10 @@
                   12
                ]
             ],
-            "id" : "039",
             "name" : "039"
          },
          {
+            "name" : "040",
             "id" : "040",
             "data" : [
                [
@@ -721,8 +719,7 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "040"
+            ]
          },
          {
             "data" : [
@@ -743,6 +740,7 @@
             "name" : "041"
          },
          {
+            "name" : "042",
             "data" : [
                [
                   "Perl",
@@ -757,8 +755,7 @@
                   11
                ]
             ],
-            "id" : "042",
-            "name" : "042"
+            "id" : "042"
          },
          {
             "id" : "043",
@@ -780,6 +777,7 @@
          },
          {
             "name" : "044",
+            "id" : "044",
             "data" : [
                [
                   "Perl",
@@ -793,12 +791,9 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "044"
+            ]
          },
          {
-            "name" : "045",
-            "id" : "045",
             "data" : [
                [
                   "Perl",
@@ -812,10 +807,11 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "id" : "045",
+            "name" : "045"
          },
          {
-            "id" : "046",
             "data" : [
                [
                   "Perl",
@@ -830,9 +826,11 @@
                   10
                ]
             ],
+            "id" : "046",
             "name" : "046"
          },
          {
+            "name" : "047",
             "data" : [
                [
                   "Perl",
@@ -847,8 +845,7 @@
                   10
                ]
             ],
-            "id" : "047",
-            "name" : "047"
+            "id" : "047"
          },
          {
             "id" : "048",
@@ -869,7 +866,6 @@
             "name" : "048"
          },
          {
-            "name" : "049",
             "data" : [
                [
                   "Perl",
@@ -884,10 +880,10 @@
                   12
                ]
             ],
-            "id" : "049"
+            "id" : "049",
+            "name" : "049"
          },
          {
-            "id" : "050",
             "data" : [
                [
                   "Perl",
@@ -902,10 +898,11 @@
                   12
                ]
             ],
+            "id" : "050",
             "name" : "050"
          },
          {
-            "name" : "051",
+            "id" : "051",
             "data" : [
                [
                   "Perl",
@@ -920,9 +917,10 @@
                   11
                ]
             ],
-            "id" : "051"
+            "name" : "051"
          },
          {
+            "name" : "052",
             "id" : "052",
             "data" : [
                [
@@ -937,11 +935,11 @@
                   "Blog",
                   14
                ]
-            ],
-            "name" : "052"
+            ]
          },
          {
             "name" : "053",
+            "id" : "053",
             "data" : [
                [
                   "Perl",
@@ -955,10 +953,10 @@
                   "Blog",
                   15
                ]
-            ],
-            "id" : "053"
+            ]
          },
          {
+            "name" : "054",
             "data" : [
                [
                   "Perl",
@@ -973,11 +971,9 @@
                   16
                ]
             ],
-            "id" : "054",
-            "name" : "054"
+            "id" : "054"
          },
          {
-            "name" : "055",
             "id" : "055",
             "data" : [
                [
@@ -992,10 +988,10 @@
                   "Blog",
                   14
                ]
-            ]
+            ],
+            "name" : "055"
          },
          {
-            "name" : "056",
             "id" : "056",
             "data" : [
                [
@@ -1010,10 +1006,10 @@
                   "Blog",
                   16
                ]
-            ]
+            ],
+            "name" : "056"
          },
          {
-            "name" : "057",
             "id" : "057",
             "data" : [
                [
@@ -1028,7 +1024,8 @@
                   "Blog",
                   15
                ]
-            ]
+            ],
+            "name" : "057"
          },
          {
             "name" : "058",
@@ -1049,7 +1046,6 @