- Added solutions by Arne Sommer.

16 files changed, 739 insertions, 649 deletions

diff --git a/challenge-018/arne-sommer/blog.txt b/challenge-018/arne-sommer/blog.txt
new file mode 100644
index 0000000000..ec2b70257a
--- /dev/null
+++ b/challenge-018/arne-sommer/blog.txt
@@ -0,0 +1 @@
+https://perl6.eu/substring-queues.html
diff --git a/challenge-018/arne-sommer/perl6/ch-1.p6 b/challenge-018/arne-sommer/perl6/ch-1.p6
new file mode 100755
index 0000000000..2d4e7b0b5f
--- /dev/null
+++ b/challenge-018/arne-sommer/perl6/ch-1.p6
@@ -0,0 +1,25 @@
+#! /usr/bin/env perl6
+
+sub MAIN (*@strings where @strings.elems >= 2)
+{
+  my %common = substrings( @strings.shift );
+
+  %common = %common ∩ substrings($_) for @strings;
+
+  .say for %common.keys.grep({ .chars == %common.keys>>.chars.max });
+}
+
+
+sub substrings ($string)
+{
+  my %substrings;
+  
+  for ^$string.chars -> $i
+  {
+    for 1 .. $string.chars - $i -> $j
+    {
+      %substrings{ $string.substr($i, $j) } = True;
+    }
+  }
+  return %substrings;
+}
diff --git a/challenge-018/arne-sommer/perl6/ch-2.p6 b/challenge-018/arne-sommer/perl6/ch-2.p6
new file mode 100755
index 0000000000..7237e4e562
--- /dev/null
+++ b/challenge-018/arne-sommer/perl6/ch-2.p6
@@ -0,0 +1,14 @@
+#! /usr/bin/env perl6
+
+use lib "lib";
+
+use PriorityQueue;
+
+my $PQ = PriorityQueue.new;
+
+$PQ.insert_with_priority("AA$_", (^99).pick) for ^10;
+
+while ! $PQ.is_empty
+{
+  say $PQ.pull_highest_priority_element;
+}
\ No newline at end of file
diff --git a/challenge-018/arne-sommer/perl6/lib/.precomp/.lock b/challenge-018/arne-sommer/perl6/lib/.precomp/.lock
new file mode 100644
index 0000000000..e69de29bb2
--- /dev/null
+++ b/challenge-018/arne-sommer/perl6/lib/.precomp/.lock
diff --git a/challenge-018/arne-sommer/perl6/lib/.precomp/B834E114E7A64AF8236503A5AE1E84F9F37C8B47/03/03D0BC625DDEC3BE511B7A604CF03963963B5CBF b/challenge-018/arne-sommer/perl6/lib/.precomp/B834E114E7A64AF8236503A5AE1E84F9F37C8B47/03/03D0BC625DDEC3BE511B7A604CF03963963B5CBF
new file mode 100644
index 0000000000..ae1304a28b
--- /dev/null
+++ b/challenge-018/arne-sommer/perl6/lib/.precomp/B834E114E7A64AF8236503A5AE1E84F9F37C8B47/03/03D0BC625DDEC3BE511B7A604CF03963963B5CBF
diff --git a/challenge-018/arne-sommer/perl6/lib/.precomp/B834E114E7A64AF8236503A5AE1E84F9F37C8B47/03/03D0BC625DDEC3BE511B7A604CF03963963B5CBF.repo-id b/challenge-018/arne-sommer/perl6/lib/.precomp/B834E114E7A64AF8236503A5AE1E84F9F37C8B47/03/03D0BC625DDEC3BE511B7A604CF03963963B5CBF.repo-id
new file mode 100644
index 0000000000..52cb87c55b
--- /dev/null
+++ b/challenge-018/arne-sommer/perl6/lib/.precomp/B834E114E7A64AF8236503A5AE1E84F9F37C8B47/03/03D0BC625DDEC3BE511B7A604CF03963963B5CBF.repo-id
@@ -0,0 +1 @@
+DAADAA97D202102F50C02F99B89E28CFC6A3CFFF
\ No newline at end of file
diff --git a/challenge-018/arne-sommer/perl6/lib/PriorityQueue.pm6 b/challenge-018/arne-sommer/perl6/lib/PriorityQueue.pm6
new file mode 100644
index 0000000000..9d2421eda9
--- /dev/null
+++ b/challenge-018/arne-sommer/perl6/lib/PriorityQueue.pm6
@@ -0,0 +1,30 @@
+use v6;
+
+unit class PriorityQueue;
+
+has %!queue;
+
+method is_empty
+{
+  return ! %!queue.elems;
+}
+
+method insert_with_priority ($payload, Int $priority)
+{
+  say ":: $payload ($priority)";
+
+  %!queue{$priority}.push: $payload;
+}
+
+method pull_highest_priority_element
+{
+  my $priority = %!queue.keys.max;
+
+  # say "Q: $priority -> " ~ @(%!queue{$priority});
+
+  my $element = @(%!queue{$priority}).shift;
+
+  %!queue{$priority}:delete unless @(%!queue{$priority}).elems;
+
+  return $element;
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index e25cdbc29a..4cb4bebf4c 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,140 +1,53 @@
 {
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
+   "title" : {
+      "text" : "Perl Weekly Challenge - 018"
    },
-   "series" : [
-      {
-         "colorByPoint" : 1,
-         "name" : "Perl Weekly Challenge - 018",
-         "data" : [
-            {
-               "name" : "Andrezgz",
-               "drilldown" : "Andrezgz",
-               "y" : 2
-            },
-            {
-               "name" : "Duane Powell",
-               "drilldown" : "Duane Powell",
-               "y" : 2
-            },
-            {
-               "drilldown" : "E. Choroba",
-               "y" : 3,
-               "name" : "E. Choroba"
-            },
-            {
-               "name" : "Feng Chang",
-               "y" : 2,
-               "drilldown" : "Feng Chang"
-            },
-            {
-               "name" : "Kevin Colyer",
-               "y" : 1,
-               "drilldown" : "Kevin Colyer"
-            },
-            {
-               "name" : "Laurent Rosenfeld",
-               "drilldown" : "Laurent Rosenfeld",
-               "y" : 6
-            },
-            {
-               "drilldown" : "Lubos Kolouch",
-               "y" : 2,
-               "name" : "Lubos Kolouch"
-            },
-            {
-               "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson",
-               "y" : 1
-            },
-            {
-               "y" : 1,
-               "drilldown" : "Martin Barth",
-               "name" : "Martin Barth"
-            },
-            {
-               "y" : 1,
-               "drilldown" : "Ozzy",
-               "name" : "Ozzy"
-            },
-            {
-               "drilldown" : "Randy Lauen",
-               "y" : 2,
-               "name" : "Randy Lauen"
-            },
-            {
-               "name" : "Roger Bell West",
-               "drilldown" : "Roger Bell West",
-               "y" : 3
-            },
-            {
-               "y" : 4,
-               "drilldown" : "Ruben Westerberg",
-               "name" : "Ruben Westerberg"
-            },
-            {
-               "drilldown" : "Simon Proctor",
-               "y" : 2,
-               "name" : "Simon Proctor"
-            },
-            {
-               "drilldown" : "Steven Wilson",
-               "y" : 1,
-               "name" : "Steven Wilson"
-            }
-         ]
-      }
-   ],
-   "subtitle" : {
-      "text" : "[Champions: 15] Last updated at 2019-07-27 20:03:05 GMT"
+   "xAxis" : {
+      "type" : "category"
    },
    "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/>"
-   },
-   "legend" : {
-      "enabled" : 0
-   },
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         }
-      }
-   },
-   "xAxis" : {
-      "type" : "category"
+      "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/>"
    },
    "drilldown" : {
       "series" : [
          {
-            "id" : "Andrezgz",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
             ],
-            "name" : "Andrezgz"
+            "name" : "Andrezgz",
+            "id" : "Andrezgz"
+         },
+         {
+            "name" : "Arne Sommer",
+            "data" : [
+               [
+                  "Perl 6",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Arne Sommer"
          },
          {
             "id" : "Duane Powell",
+            "name" : "Duane Powell",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
-            ],
-            "name" : "Duane Powell"
+            ]
          },
          {
             "name" : "E. Choroba",
-            "id" : "E. Choroba",
             "data" : [
                [
                   "Perl 5",
@@ -144,29 +57,31 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "E. Choroba"
          },
          {
+            "name" : "Feng Chang",
             "data" : [
                [
                   "Perl 6",
                   2
                ]
             ],
-            "id" : "Feng Chang",
-            "name" : "Feng Chang"
+            "id" : "Feng Chang"
          },
          {
             "id" : "Kevin Colyer",
+            "name" : "Kevin Colyer",
             "data" : [
                [
                   "Perl 6",
                   1
                ]
-            ],
-            "name" : "Kevin Colyer"
+            ]
          },
          {
+            "id" : "Laurent Rosenfeld",
             "name" : "Laurent Rosenfeld",
             "data" : [
                [
@@ -181,42 +96,41 @@
                   "Blog",
                   2
                ]
-            ],
-            "id" : "Laurent Rosenfeld"
+            ]
          },
          {
-            "name" : "Lubos Kolouch",
+            "id" : "Lubos Kolouch",
             "data" : [
                [
                   "Perl 5",
                   2
                ]
             ],
-            "id" : "Lubos Kolouch"
+            "name" : "Lubos Kolouch"
          },
          {
-            "id" : "Mark Anderson",
+            "name" : "Mark Anderson",
             "data" : [
                [
                   "Perl 5",
                   1
                ]
             ],
-            "name" : "Mark Anderson"
+            "id" : "Mark Anderson"
          },
          {
+            "id" : "Martin Barth",
             "name" : "Martin Barth",
             "data" : [
                [
                   "Perl 6",
                   1
                ]
-            ],
-            "id" : "Martin Barth"
+            ]
          },
          {
-            "name" : "Ozzy",
             "id" : "Ozzy",
+            "name" : "Ozzy",
             "data" : [
                [
                   "Perl 6",
@@ -225,8 +139,8 @@
             ]
          },
          {
-            "name" : "Randy Lauen",
             "id" : "Randy Lauen",
+            "name" : "Randy Lauen",
             "data" : [
                [
                   "Perl 6",
@@ -235,6 +149,7 @@
             ]
          },
          {
+            "id" : "Roger Bell West",
             "data" : [
                [
                   "Perl 5",
@@ -245,11 +160,10 @@
                   1
                ]
             ],
-            "id" : "Roger Bell West",
             "name" : "Roger Bell West"
          },
          {
-            "name" : "Ruben Westerberg",
+            "id" : "Ruben Westerberg",
             "data" : [
                [
                   "Perl 5",
@@ -260,11 +174,11 @@
                   2
                ]
             ],
-            "id" : "Ruben Westerberg"
+            "name" : "Ruben Westerberg"
          },
          {
-            "name" : "Simon Proctor",
             "id" : "Simon Proctor",
+            "name" : "Simon Proctor",
             "data" : [
                [
                   "Perl 6",
@@ -273,21 +187,126 @@
             ]
          },
          {
-            "name" : "Steven Wilson",
             "data" : [
                [
                   "Perl 5",
                   1
                ]
             ],
+            "name" : "Steven Wilson",
             "id" : "Steven Wilson"
          }
       ]
    },
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         },
+         "borderWidth" : 0
+      }
+   },
    "chart" : {
       "type" : "column"
    },
-   "title" : {
-      "text" : "Perl Weekly Challenge - 018"
+   "legend" : {
+      "enabled" : 0
+   },
+   "series" : [
+      {
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "drilldown" : "Andrezgz",
+               "name" : "Andrezgz",
+               "y" : 2
+            },
+            {
+               "y" : 3,
+               "drilldown" : "Arne Sommer",
+               "name" : "Arne Sommer"
+            },
+            {
+               "drilldown" : "Duane Powell",
+               "name" : "Duane Powell",
+               "y" : 2
+            },
+            {
+               "y" : 3,
+               "name" : "E. Choroba",
+               "drilldown" : "E. Choroba"
+            },
+            {
+               "drilldown" : "Feng Chang",
+               "name" : "Feng Chang",
+               "y" : 2
+            },
+            {
+               "y" : 1,
+               "name" : "Kevin Colyer",
+               "drilldown" : "Kevin Colyer"
+            },
+            {
+               "y" : 6,
+               "drilldown" : "Laurent Rosenfeld",
+               "name" : "Laurent Rosenfeld"
+            },
+            {
+               "y" : 2,
+               "name" : "Lubos Kolouch",
+               "drilldown" : "Lubos Kolouch"
+            },
+            {
+               "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson",
+               "y" : 1
+            },
+            {
+               "name" : "Martin Barth",
+               "drilldown" : "Martin Barth",
+               "y" : 1
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Ozzy",
+               "name" : "Ozzy"
+            },
+            {
+               "name" : "Randy Lauen",
+               "drilldown" : "Randy Lauen",
+               "y" : 2
+            },
+            {
+               "y" : 3,
+               "drilldown" : "Roger Bell West",
+               "name" : "Roger Bell West"
+            },
+            {
+               "y" : 4,
+               "name" : "Ruben Westerberg",
+               "drilldown" : "Ruben Westerberg"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Simon Proctor",
+               "name" : "Simon Proctor"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Steven Wilson",
+               "name" : "Steven Wilson"
+            }
+         ],
+         "name" : "Perl Weekly Challenge - 018"
+      }
+   ],
+   "subtitle" : {
+      "text" : "[Champions: 16] Last updated at 2019-07-28 00:01:06 GMT"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index a26149760f..afe9c2d7a5 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -2,24 +2,33 @@
    "tooltip" : {
       "pointFormat" : "<b>{point.y:.0f}</b>"
    },
-   "chart" : {
-      "type" : "column"
+   "xAxis" : {
+      "labels" : {
+         "style" : {
+            "fontSize" : "13px",
+            "fontFamily" : "Verdana, sans-serif"
+         }
+      },
+      "type" : "category"
    },
-   "legend" : {
-      "enabled" : "false"
+   "subtitle" : {
+      "text" : "Last updated at 2019-07-28 00:02:34 GMT"
    },
    "yAxis" : {
+      "min" : 0,
       "title" : {
          "text" : null
-      },
-      "min" : 0
+      }
+   },
+   "title" : {
+      "text" : "Perl Weekly Challenge Contributions - 2019"
    },
    "series" : [
       {
          "data" : [
             [
                "Blog",
-               167
+               168
             ],
             [
                "Perl 5",
@@ -27,37 +36,28 @@
             ],
             [
                "Perl 6",
-               424
+               426
             ]
          ],
          "dataLabels" : {
-            "style" : {
-               "fontSize" : "13px",
-               "fontFamily" : "Verdana, sans-serif"
-            },
-            "color" : "#FFFFFF",
-            "format" : "{point.y:.0f}",
+            "enabled" : "true",
             "align" : "right",
+            "y" : 10,
             "rotation" : -90,
-            "enabled" : "true",
-            "y" : 10
+            "format" : "{point.y:.0f}",
+            "style" : {
+               "fontFamily" : "Verdana, sans-serif",
+               "fontSize" : "13px"
+            },
+            "color" : "#FFFFFF"
          },
          "name" : "Contributions"
       }
    ],
-   "xAxis" : {
-      "type" : "category",
-      "labels" : {
-         "style" : {
-            "fontSize" : "13px",
-            "fontFamily" : "Verdana, sans-serif"
-         }
-      }
-   },
-   "title" : {
-      "text" : "Perl Weekly Challenge Contributions - 2019"
+   "chart" : {
+      "type" : "column"
    },
-   "subtitle" : {
-      "text" : "Last updated at 2019-07-27 20:03:19 GMT"
+   "legend" : {
+      "enabled" : "false"
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index b944dfbc7c..513888a7d4 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,10 +1,15 @@
 {
+   "subtitle" : {
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2019-07-28 00:02:34 GMT"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
    "title" : {
       "text" : "Perl Weekly Challenge Language"
    },
-   "subtitle" : {
-      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2019-07-27 20:03:19 GMT"
-   },
    "drilldown" : {
       "series" : [
          {
@@ -26,6 +31,7 @@
             ]
          },
          {
+            "id" : "002",
             "data" : [
                [
                   "Perl 5",
@@ -40,10 +46,10 @@
                   9
                ]
             ],
-            "name" : "002",
-            "id" : "002"
+            "name" : "002"
          },
          {
+            "name" : "003",
             "data" : [
                [
                   "Perl 5",
@@ -58,10 +64,10 @@
                   8
                ]
             ],
-            "id" : "003",
-            "name" : "003"
+            "id" : "003"
          },
          {
+            "id" : "004",
             "data" : [
                [
                   "Perl 5",
@@ -76,7 +82,6 @@
                   9
                ]
             ],
-            "id" : "004",
             "name" : "004"
          },
          {
@@ -98,7 +103,6 @@
             "name" : "005"
          },
          {
-            "name" : "006",
             "id" : "006",
             "data" : [
                [
@@ -113,9 +117,11 @@
                   "Blog",
                   6
                ]
-            ]
+            ],
+            "name" : "006"
          },
          {
+            "id" : "007",
             "data" : [
                [
                   "Perl 5",
@@ -130,12 +136,9 @@
                   8
                ]
             ],
-            "id" : "007",
             "name" : "007"
          },
          {
-            "name" : "008",
-            "id" : "008",
             "data" : [
                [
                   "Perl 5",
@@ -149,7 +152,9 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "008",
+            "name" : "008"
          },
          {
             "data" : [
@@ -166,11 +171,10 @@
                   11
                ]
             ],
-            "name" : "009",
-            "id" : "009"
+            "id" : "009",
+            "name" : "009"
          },
          {
-            "id" : "010",
             "name" : "010",
             "data" : [
                [
@@ -185,9 +189,11 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "010"
          },
          {
+            "id" : "011",
             "data" : [
                [
                   "Perl 5",
@@ -202,12 +208,10 @@
                   8
                ]
             ],
-            "id" : "011",
             "name" : "011"
          },
          {
             "name" : "012",
-            "id" : "012",
             "data" : [
                [
                   "Perl 5",
@@ -221,11 +225,11 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "012"
          },
          {
             "id" : "013",
-            "name" : "013",
             "data" : [
                [
                   "Perl 5",
@@ -239,11 +243,11 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "013"
          },
          {
             "id" : "014",
-            "name" : "014",
             "data" : [
                [
                   "Perl 5",
@@ -257,9 +261,11 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "name" : "014"
          },
          {
+            "name" : "015",
             "data" : [
                [
                   "Perl 5",
@@ -274,12 +280,9 @@
                   12
                ]
             ],
-            "id" : "015",
-            "name" : "015"
+            "id" : "015"
          },
          {
-            "id" : "016",
-            "name" : "016",
             "data" : [
                [
                   "Perl 5",
@@ -293,7 +296,9 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "id" : "016",
+            "name" : "016"
          },
          {
             "name" : "017",
@@ -314,6 +319,8 @@
             ]
          },
          {
+            "name" : "018",
+            "id" : "018",
             "data" : [
                [
                   "Perl 5",
@@ -321,50 +328,45 @@
                ],
                [
                   "Perl 6",
-                  13
+                  15
                ],
                [
                   "Blog",
-                  4
+                  5
                ]
-            ],
-            "name" : "018",
-            "id" : "018"
+            ]
          }
       ]
    },
-   "xAxis" : {
-      "type" : "category"
-   },
    "series" : [
       {
-         "colorByPoint" : "true",
          "name" : "Perl Weekly Challenge Languages",
+         "colorByPoint" : "true",
          "data" : [
             {
-               "name" : "#001",
+               "drilldown" : "001",
                "y" : 123,
-               "drilldown" : "001"
+               "name" : "#001"
             },
             {
                "name" : "#002",
-               "y" : 104,
-               "drilldown" : "002"
+               "drilldown" : "002",
+               "y" : 104
             },
             {
-               "name" : "#003",
                "y" : 66,
-               "drilldown" : "003"
+               "drilldown" : "003",
+               "name" : "#003"
             },
             {
+               "drilldown" : "004",
                "y" : 84,
-               "name" : "#004",
-               "drilldown" : "004"
+               "name" : "#004"
             },
             {
-               "name" : "#005",
+               "drilldown" : "005",
                "y" : 66,
-               "drilldown" : "005"
+               "name" : "#005"
             },
             {
                "drilldown" : "006",
@@ -372,91 +374,89 @@
                "name" : "#006"
             },
             {
-               "drilldown" : "007",
                "name" : "#007",
-               "y" : 54
+               "y" : 54,
+               "drilldown" : "007"
             },
             {
                "name" : "#008",
-               "y" : 67,
-               "drilldown" : "008"
+               "drilldown" : "008",
+               "y" : 67
             },
             {
-               "drilldown" : "009",
                "y" : 65,
+               "drilldown" : "009",
                "name" : "#009"
             },
             {
-               "name" : "#010",
                "y" : 58,
-               "drilldown" : "010"
+               "drilldown" : "010",
+               "name" : "#010"
             },
             {
-               "drilldown" : "011",
                "name" : "#011",
+               "drilldown" : "011",
                "y" : 77
             },
             {
                "y" : 81,
-               "name" : "#012",
-               "drilldown" : "012"
+               "drilldown" : "012",
+               "name" : "#012"
             },
             {
                "drilldown" : "013",
-               "name" : "#013",
-               "y" : 74
+               "y" : 74,
+               "name" : "#013"
             },
             {
                "drilldown" : "014",
-               "name" : "#014",
-               "y" : 94
+               "y" : 94,
+               "name" : "#014"
             },
             {
                "name" : "#015",
-               "y" : 90,
-               "drilldown" : "015"
+               "drilldown" : "015",
+               "y" : 90
             },
             {
-               "y" : 64,
                "name" : "#016",
-               "drilldown" : "016"
+               "drilldown" : "016",
+               "y" : 64
             },
             {
-               "drilldown" : "017",
                "name" : "#017",
+               "drilldown" : "017",
                "y" : 77
             },
             {
                "drilldown" : "018",
-               "y" : 33,
+               "y" : 36,
                "name" : "#018"
             }
          ]
       }
    ],
+   "chart" : {
+      "type" : "column"
+   },
    "legend" : {
       "enabled" : "false"
    },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "tooltip" : {
-      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>",
-      "headerFormat" : "<span style=\"font-size:11px\"></span>",
-      "followPointer" : "true"
-   },
    "plotOptions" : {
       "series" : {
-         "borderWidth" : 0,
          "dataLabels" : {
             "format" : "{point.y}",
             "enabled" : 1
-         }
+         },
+         "borderWidth" : 0
       }
    },
-   "chart" : {
-      "type" : "column"
+   "tooltip" : {
+      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style=\"font-size:11px\"></span>",
+      "followPointer" : "true"
+   },
+   "xAxis" : {
+      "type" : "category"
    }
 }
diff --git a/stats/pwc-leaders.json b/stats/pwc-leaders.json
index d76750a9d2..b5bc0cfdd2 100644
--- a/stats/