- Added Perl solutions to "Reorder List" task.

13 files changed, 1039 insertions, 880 deletions

diff --git a/challenge-068/mohammad-anwar/perl/ch-2.pl b/challenge-068/mohammad-anwar/perl/ch-2.pl
new file mode 100644
index 0000000000..9aaa8790a0
--- /dev/null
+++ b/challenge-068/mohammad-anwar/perl/ch-2.pl
@@ -0,0 +1,74 @@
+#!/usr/bin/perl
+
+#
+# Perl Weekly Challenge - 068
+#
+# Task #2: Reorder List
+#
+# https://perlweeklychallenge.org/blog/perl-weekly-challenge-068/
+#
+
+package Node;
+
+use Moo;
+
+has v => (is => 'rw');
+has c => (is => 'rw');
+
+package main;
+
+my $list = $ARGV[0]//'1 -> 2 -> 3 -> 4 -> 5';
+print linked_list(reorder_list($list)), "\n";
+
+#
+#
+# METHODS
+
+sub reorder_list {
+    my ($list) = @_;
+
+    $list =~ s/\s+//g;
+    $list = [ split /\-\>/, $list ];
+    my $head = Node->new(v => shift @$list);
+    my $link = [ $head ];
+
+    # prepare singly linked list
+    foreach my $v (@$list) {
+        my $node = Node->new(v => $v);
+        $link->[-1]->c($node);
+        push @$link, $node;
+    }
+
+    # reorder linked list
+    my $i = 1;
+    foreach (0 .. int($#$list/2)) {
+        my $node = pop @$link;
+        splice(@$link, $i, 0, $node);
+
+        # remove child from the last node
+        $link->[-1]->c(undef);
+
+        # link new node to previous node
+        $link->[$i-1]->c($node);
+
+        # make the next node as child of new node
+        $node->c($link->[$i+1]);
+
+        $i += 2;
+    }
+
+    return $head;
+}
+
+sub linked_list {
+    my ($head) = @_;
+
+    my @v = ();
+    while ($head->c) {
+        push @v, $head->v;
+        $head = $head->c;
+    }
+    push @v, $head->v;
+
+    return sprintf("%s", join ' -> ', @v);
+}
diff --git a/challenge-068/mohammad-anwar/perl/ch-2a.pl b/challenge-068/mohammad-anwar/perl/ch-2a.pl
new file mode 100644
index 0000000000..4fea00d762
--- /dev/null
+++ b/challenge-068/mohammad-anwar/perl/ch-2a.pl
@@ -0,0 +1,85 @@
+#!/usr/bin/perl
+
+#
+# Perl Weekly Challenge - 068
+#
+# Task #2: Reorder List
+#
+# https://perlweeklychallenge.org/blog/perl-weekly-challenge-068/
+#
+
+package Node;
+
+use Moo;
+
+has v => (is => 'rw');
+has c => (is => 'rw');
+
+package main;
+
+use Test::More;
+
+is( linked_list(reorder_list('1 -> 2 -> 3 -> 4')),
+    '1 -> 4 -> 2 -> 3',
+    'testing 1 -> 2 -> 3 -> 4' );
+is( linked_list(reorder_list('1 -> 2 -> 3 -> 4 -> 5')),
+    '1 -> 5 -> 2 -> 4 -> 3',
+    'testing 1 -> 2 -> 3 -> 4 -> 5' );
+is( linked_list(reorder_list('1 -> 2 -> 3 -> 4 -> 5 -> 6')),
+    '1 -> 6 -> 2 -> 5 -> 3 -> 4',
+    'testing 1 -> 2 -> 3 -> 4 -> 5 -> 6' );
+
+done_testing;
+
+#
+#
+# METHODS
+
+sub reorder_list {
+    my ($list) = @_;
+
+    $list =~ s/\s+//g;
+    $list = [ split /\-\>/, $list ];
+    my $head = Node->new(v => shift @$list);
+    my $link = [ $head ];
+
+    # prepare singly linked list
+    foreach my $v (@$list) {
+        my $node = Node->new(v => $v);
+        $link->[-1]->c($node);
+        push @$link, $node;
+    }
+
+    # reorder linked list
+    my $i = 1;
+    foreach (0 .. int($#$list/2)) {
+        my $node = pop @$link;
+        splice(@$link, $i, 0, $node);
+
+        # remove child from the last node
+        $link->[-1]->c(undef);
+
+        # link new node to previous node
+        $link->[$i-1]->c($node);
+
+        # make the next node as child of new node
+        $node->c($link->[$i+1]);
+
+        $i += 2;
+    }
+
+    return $head;
+}
+
+sub linked_list {
+    my ($head) = @_;
+
+    my @v = ();
+    while ($head->c) {
+        push @v, $head->v;
+        $head = $head->c;
+    }
+    push @v, $head->v;
+
+    return sprintf("%s", join ' -> ', @v);
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 411e6f9968..6a4d0651ed 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,12 +1,65 @@
 {
+   "series" : [
+      {
+         "name" : "Perl Weekly Challenge - 068",
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "drilldown" : "Andrew Shitov",
+               "name" : "Andrew Shitov",
+               "y" : 2
+            },
+            {
+               "name" : "E. Choroba",
+               "y" : 2,
+               "drilldown" : "E. Choroba"
+            },
+            {
+               "name" : "Javier Luque",
+               "y" : 5,
+               "drilldown" : "Javier Luque"
+            },
+            {
+               "y" : 4,
+               "name" : "Luca Ferrari",
+               "drilldown" : "Luca Ferrari"
+            },
+            {
+               "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Mohammad S Anwar",
+               "name" : "Mohammad S Anwar",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Roger Bell_West",
+               "y" : 2,
+               "name" : "Roger Bell_West"
+            },
+            {
+               "drilldown" : "Simon Proctor",
+               "name" : "Simon Proctor",
+               "y" : 2
+            },
+            {
+               "name" : "Walt Mankowski",
+               "y" : 2,
+               "drilldown" : "Walt Mankowski"
+            }
+         ]
+      }
+   ],
    "chart" : {
       "type" : "column"
    },
    "plotOptions" : {
       "series" : {
          "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
+            "format" : "{point.y}",
+            "enabled" : 1
          },
          "borderWidth" : 0
       }
@@ -16,20 +69,13 @@
    },
    "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"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
+      "followPointer" : 1,
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
    },
    "drilldown" : {
       "series" : [
          {
+            "name" : "Andrew Shitov",
             "id" : "Andrew Shitov",
             "data" : [
                [
@@ -40,8 +86,7 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Andrew Shitov"
+            ]
          },
          {
             "name" : "E. Choroba",
@@ -54,6 +99,7 @@
             "id" : "E. Choroba"
          },
          {
+            "name" : "Javier Luque",
             "data" : [
                [
                   "Perl",
@@ -68,10 +114,11 @@
                   1
                ]
             ],
-            "name" : "Javier Luque",
             "id" : "Javier Luque"
          },
          {
+            "name" : "Luca Ferrari",
+            "id" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -81,9 +128,7 @@
                   "Blog",
                   2
                ]
-            ],
-            "name" : "Luca Ferrari",
-            "id" : "Luca Ferrari"
+            ]
          },
          {
             "data" : [
@@ -92,108 +137,63 @@
                   1
                ]
             ],
-            "name" : "Mark Anderson",
-            "id" : "Mark Anderson"
+            "id" : "Mark Anderson",
+            "name" : "Mark Anderson"
          },
          {
             "name" : "Mohammad S Anwar",
+            "id" : "Mohammad S Anwar",
             "data" : [
                [
                   "Perl",
-                  1
+                  2
                ]
-            ],
-            "id" : "Mohammad S Anwar"
+            ]
          },
          {
+            "id" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "Roger Bell_West",
-            "id" : "Roger Bell_West"
+            "name" : "Roger Bell_West"
          },
          {
-            "id" : "Simon Proctor",
+            "name" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "name" : "Simon Proctor"
+            "id" : "Simon Proctor"
          },
          {
-            "id" : "Walt Mankowski",
+            "name" : "Walt Mankowski",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "Walt Mankowski"
+            "id" : "Walt Mankowski"
          }
       ]
    },
    "title" : {
       "text" : "Perl Weekly Challenge - 068"
    },
-   "series" : [
-      {
-         "data" : [
-            {
-               "y" : 2,
-               "name" : "Andrew Shitov",
-               "drilldown" : "Andrew Shitov"
-            },
-            {
-               "y" : 2,
-               "name" : "E. Choroba",
-               "drilldown" : "E. Choroba"
-            },
-            {
-               "name" : "Javier Luque",
-               "drilldown" : "Javier Luque",
-               "y" : 5
-            },
-            {
-               "y" : 4,
-               "drilldown" : "Luca Ferrari",
-               "name" : "Luca Ferrari"
-            },
-            {
-               "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson",
-               "y" : 1
-            },
-            {
-               "name" : "Mohammad S Anwar",
-               "drilldown" : "Mohammad S Anwar",
-               "y" : 1
-            },
-            {
-               "drilldown" : "Roger Bell_West",
-               "name" : "Roger Bell_West",
-               "y" : 2
-            },
-            {
-               "name" : "Simon Proctor",
-               "drilldown" : "Simon Proctor",
-               "y" : 2
-            },
-            {
-               "name" : "Walt Mankowski",
-               "drilldown" : "Walt Mankowski",
-               "y" : 2
-            }
-         ],
-         "name" : "Perl Weekly Challenge - 068",
-         "colorByPoint" : 1
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
       }
-   ],
+   },
    "subtitle" : {
-      "text" : "[Champions: 9] Last updated at 2020-07-07 12:41:52 GMT"
+      "text" : "[Champions: 9] Last updated at 2020-07-07 21:16:09 GMT"
+   },
+   "xAxis" : {
+      "type" : "category"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 458caa2c8b..27abb8726d 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,22 +1,4 @@
 {
-   "xAxis" : {
-      "type" : "category",
-      "labels" : {
-         "style" : {
-            "fontFamily" : "Verdana, sans-serif",
-            "fontSize" : "13px"
-         }
-      }
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
    "series" : [
       {
          "data" : [
@@ -26,30 +8,36 @@
             ],
             [
                "Perl",
-               2798
+               2799
             ],
             [
                "Raku",
                1791
             ]
          ],
-         "name" : "Contributions",
          "dataLabels" : {
+            "align" : "right",
             "style" : {
-               "fontSize" : "13px",
-               "fontFamily" : "Verdana, sans-serif"
+               "fontFamily" : "Verdana, sans-serif",
+               "fontSize" : "13px"
             },
-            "y" : 10,
-            "enabled" : "true",
             "format" : "{point.y:.0f}",
+            "enabled" : "true",
             "color" : "#FFFFFF",
-            "align" : "right",
+            "y" : 10,
             "rotation" : -90
-         }
+         },
+         "name" : "Contributions"
       }
    ],
-   "subtitle" : {
-      "text" : "Last updated at 2020-07-07 12:41:52 GMT"
+   "chart" : {
+      "type" : "column"
+   },
+   "legend" : {
+      "enabled" : "false"
+   },
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
    },
    "title" : {
       "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
@@ -59,5 +47,17 @@
       "title" : {
          "text" : null
       }
+   },
+   "subtitle" : {
+      "text" : "Last updated at 2020-07-07 21:16:09 GMT"
+   },
+   "xAxis" : {
+      "type" : "category",
+      "labels" : {
+         "style" : {
+            "fontSize" : "13px",
+            "fontFamily" : "Verdana, sans-serif"
+         }
+      }
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 561b757893..758b298491 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,85 +1,75 @@
 {
-   "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"
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
    },
-   "legend" : {
-      "enabled" : "false"
+   "title" : {
+      "text" : "Perl Weekly Challenge Language"
    },
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         }
-      }
+   "xAxis" : {
+      "type" : "category"
    },
-   "chart" : {
-      "type" : "column"
+   "subtitle" : {
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2020-07-07 21:16:09 GMT"
    },
    "series" : [
       {
-         "colorByPoint" : "true",
          "data" : [
             {
-               "name" : "#001",
                "drilldown" : "001",
+               "name" : "#001",
                "y" : 142
             },
             {
                "drilldown" : "002",
-               "name" : "#002",
-               "y" : 109
+               "y" : 109,
+               "name" : "#002"
             },
             {
+               "drilldown" : "003",
                "y" : 71,
-               "name" : "#003",
-               "drilldown" : "003"
+               "name" : "#003"
             },
             {
+               "name" : "#004",
                "y" : 91,
-               "drilldown" : "004",
-               "name" : "#004"
+               "drilldown" : "004"
             },
             {
+               "y" : 72,
                "name" : "#005",
-               "drilldown" : "005",
-               "y" : 72
+               "drilldown" : "005"
             },
             {
-               "name" : "#006",
                "drilldown" : "006",
+               "name" : "#006",
                "y" : 52
             },
             {
-               "drilldown" : "007",
+               "y" : 59,
                "name" : "#007",
-               "y" : 59
+               "drilldown" : "007"
             },
             {
                "y" : 72,
-               "drilldown" : "008",
-               "name" : "#008"
+               "name" : "#008",
+               "drilldown" : "008"
             },
             {
                "drilldown" : "009",
-               "name" : "#009",
-               "y" : 68
+               "y" : 68,
+               "name" : "#009"
             },
             {
+               "drilldown" : "010",
                "y" : 60,
-               "name" : "#010",
-               "drilldown" : "010"
+               "name" : "#010"
             },
             {
-               "name" : "#011",
                "drilldown" : "011",
-               "y" : 79
+               "y" : 79,
+               "name" : "#011"
             },
             {
                "y" : 83,
@@ -87,49 +77,49 @@
                "drilldown" : "012"
             },
             {
-               "y" : 76,
                "drilldown" : "013",
-               "name" : "#013"
+               "name" : "#013",
+               "y" : 76
             },
             {
-               "drilldown" : "014",
                "name" : "#014",
-               "y" : 96
+               "y" : 96,
+               "drilldown" : "014"
             },
             {
+               "name" : "#015",
                "y" : 93,
-               "drilldown" : "015",
-               "name" : "#015"
+               "drilldown" : "015"
             },
             {
                "drilldown" : "016",
-               "name" : "#016",
-               "y" : 66
+               "y" : 66,
+               "name" : "#016"
             },
             {
-               "drilldown" : "017",
+               "y" : 79,
                "name" : "#017",
-               "y" : 79
+               "drilldown" : "017"
             },
             {
-               "drilldown" : "018",
+               "y" : 76,
                "name" : "#018",
-               "y" : 76
+               "drilldown" : "018"
             },
             {
                "drilldown" : "019",
-               "name" : "#019",
-               "y" : 97
+               "y" : 97,
+               "name" : "#019"
             },
             {
                "name" : "#020",
-               "drilldown" : "020",
-               "y" : 95
+               "y" : 95,
+               "drilldown" : "020"
             },
             {
-               "y" : 67,
                "drilldown" : "021",
-               "name" : "#021"
+               "name" : "#021",
+               "y" : 67
             },
             {
                "drilldown" : "022",
@@ -138,12 +128,12 @@
             },
             {
                "drilldown" : "023",
-               "name" : "#023",
-               "y" : 91
+               "y" : 91,
+               "name" : "#023"
             },
             {
-               "y" : 70,
                "name" : "#024",
+               "y" : 70,
                "drilldown" : "024"
             },
             {
@@ -152,68 +142,68 @@
                "drilldown" : "025"
             },
             {
+               "drilldown" : "026",
                "y" : 70,
-               "name" : "#026",
-               "drilldown" : "026"
+               "name" : "#026"
             },
             {
-               "y" : 58,
                "drilldown" : "027",
+               "y" : 58,
                "name" : "#027"
             },
             {
-               "y" : 78,
+               "drilldown" : "028",
                "name" : "#028",
-               "drilldown" : "028"
+               "y" : 78
             },
             {
-               "drilldown" : "029",
+               "y" : 77,
                "name" : "#029",
-               "y" : 77
+               "drilldown" : "029"
             },
             {
-               "drilldown" : "030",
+               "y" : 115,
                "name" : "#030",
-               "y" : 115
+               "drilldown" : "030"
             },
             {
+               "name" : "#031",
                "y" : 87,
-               "drilldown" : "031",
-               "name" : "#031"
+               "drilldown" : "031"
             },
             {
+               "drilldown" : "032",
                "y" : 92,
-               "name" : "#032",
-               "drilldown" : "032"
+               "name" : "#032"
             },
             {
                "name" : "#033",
-               "drilldown" : "033",
-               "y" : 108
+               "y" : 108,
+               "drilldown" : "033"
             },
             {
                "drilldown" : "034",
-               "name" : "#034",
-               "y" : 62
+               "y" : 62,
+               "name" : "#034"
             },
             {
-               "y" : 62,
+               "drilldown" : "035",
                "name" : "#035",
-               "drilldown" : "035"
+               "y" : 62
             },
             {
-               "drilldown" : "036",
                "name" : "#036",
-               "y" : 66
+               "y" : 66,
+               "drilldown" : "036"
             },
             {
-               "name" : "#037",
                "drilldown" : "037",
+               "name" : "#037",
                "y" : 65
             },
             {
-               "y" : 65,
                "name" : "#038",
+               "y" : 65,
                "drilldown" : "038"
             },
             {
@@ -223,93 +213,93 @@
             },
             {
                "drilldown" : "040",
-               "name" : "#040",
-               "y" : 71
+               "y" : 71,
+               "name" : "#040"
             },
             {
-               "drilldown" : "041",
                "name" : "#041",
-               "y" : 74
+               "y" : 74,
+               "drilldown" : "041"
             },
             {
-               "y" : 88,
                "name" : "#042",
+               "y" : 88,
                "drilldown" : "042"
             },
             {
-               "y" : 66,
                "name" : "#043",
+               "y" : 66,
                "drilldown" : "043"
             },
             {
                "name" : "#044",
-               "drilldown" : "044",
-               "y" : 82
+               "y" : 82,
+               "drilldown" : "044"
             },
             {
-               "drilldown" : "045",
                "name" : "#045",
-               "y" : 94
+               "y" : 94,
+               "drilldown" : "045"
             },
             {
                "drilldown" : "046",
-               "name" : "#046",
-               "y" : 85
+               "y" : 85,
+               "name" : "#046"
             },
             {
                "drilldown" : "047",
-               "name" : "#047",
-               "y" : 82
+               "y" : 82,
+               "name" : "#047"
             },
             {
                "y" : 106,
-               "drilldown" : "048",
-               "name" : "#048"
+               "name" : "#048",
+               "drilldown" : "048"
             },
             {
-               "y" : 85,
                "drilldown" : "049",
-               "name" : "#049"
+               "name" : "#049",
+               "y" : 85
             },
             {
-               "drilldown" : "050",
                "name" : "#050",
-               "y" : 96
+               "y" : 96,
+               "drilldown" : "050"
             },
             {
-               "drilldown" : "051",
+               "y" : 87,
                "name" : "#051",
-               "y" : 87
+               "drilldown" : "051"
             },
             {
-               "y" : 89,
+               "drilldown" : "052",
                "name" : "#052",
-               "drilldown" : "052"
+               "y" : 89
             },
             {
                "drilldown" : "053",
-               "name" : "#053",
-               "y" : 99
+               "y" : 99,
+               "name" : "#053"
             },
             {
+               "name" : "#054",
                "y" : 99,
-               "drilldown" : "054",
-               "name" : "#054"
+               "drilldown" : "054"
             },
             {
-               "drilldown" : "055",
                "name" : "#055",
-               "y" : 86
+               "y" : 86,
+               "drilldown" : "055"
             },
             {
-               "name" : "#056",
                "drilldown" : "056",
+               "name" : "#056",
                "y" : 93
             },
             {
-               "name" : "#057",
                "drilldown" : "057",
-               "y" : 78
+               "y" : 78,
+               "name" : "#057"
             },
             {
                "y" : 62,
@@ -318,23 +308,23 @@
             },
             {
                "y" : 82,
-               "drilldown" : "059",
-               "name" : "#059"
+               "name" : "#059",
+               "drilldown" : "059"
             },
             {
+               "y" : 78,
                "name" : "#060",
-               "drilldown" : "060",
-               "y" : 78
+               "drilldown" : "060"
             },
             {
-               "y" : 79,
                "drilldown" : "061",
-               "name" : "#061"
+               "name" : "#061",
+               "y" : 79
             },
             {
-               "drilldown" : "062",
+               "y" : 54,
                "name" : "#062",
-               "y" : 54
+               "drilldown" : "062"
             },
             {
                "drilldown" : "063",
@@ -342,45 +332,58 @@
                "y" : 87
             },
             {
+               "drilldown" : "064",
                "y" : 76,
-               "name" : "#064",
-               "drilldown" : "064"
+               "name" : "#064"
             },
             {
+               "drilldown" : "065",
                "y" : 71,
-               "name" : "#065",
-               "drilldown" : "065"
+               "name" : "#065"
             },
             {
                "drilldown" : "066",
-               "name" : "#066",
-               "y" : 81
+               "y" : 81,
+               "name" : "#066"
             },
             {
+               "drilldown" : "067",
                "y" : 86,
-               "name" : "#067",
-               "drilldown" : "067"
+               "name" : "#067"
             },
             {
-               "y" : 21,
                "drilldown" : "068",
-               "name" : "#068"
+               "name" : "#068",
+               "y" : 22
             }
          ],
+         "colorByPoint" : "true",
          "name" : "Perl Weekly Challenge Languages"
       }
    ],
-   "subtitle" : {
-      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2020-07-07 12:41:52 GMT"
+   "chart" : {
+      "type" : "column"
    },
-   "title" : {
-      "text" : "Perl Weekly Challenge Language"
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
+         "borderWidth" : 0
+      }
+   },
+   "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"
+   },
+   "legend" : {
+      "enabled" : "false"
    },
    "drilldown" : {
       "series" : [
          {
-            "id" : "001",
-            "name" : "001",
             "data" : [
                [
                   "Perl",
@@ -394,7 +397,9 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "id" : "001",
+            "name" : "001"
          },
          {
             "data" : [
@@ -411,8 +416,8 @@
                   10
                ]
             ],
-            "name" : "002",
-            "id" : "002"
+            "id" : "002",
+            "name" : "002"
          },
          {
             "data" : [
@@ -429,8 +434,8 @@
                   9
                ]
             ],
-            "name" : "003",
-            "id" : "003"
+            "id" : "003",
+            "name" : "003"
          },
          {
             "name" : "004",
@@ -451,8 +456,6 @@
             "id" : "004"
          },
          {
-            "id" : "005",
-            "name" : "005",
             "data" : [
                [
                   "Perl",
@@ -466,7 +469,9 @@
                   "Blog",
                   12
                ]