- Added solutions by James Smith.

19 files changed, 1811 insertions, 1778 deletions

diff --git a/challenge-249/james-smith/blog.txt b/challenge-249/james-smith/blog.txt
new file mode 100644
index 0000000000..2958d8ff12
--- /dev/null
+++ b/challenge-249/james-smith/blog.txt
@@ -0,0 +1 @@
+https://challenges.jamessmith.me.uk/weekly/weekly-challenge-249/
diff --git a/challenge-249/james-smith/perl/ch-1.pl b/challenge-249/james-smith/perl/ch-1.pl
new file mode 100644
index 0000000000..32e251479c
--- /dev/null
+++ b/challenge-249/james-smith/perl/ch-1.pl
@@ -0,0 +1,9 @@
+sub equal_pairs {
+  my(%C,$t);
+  $C{$_}++ for @_;            ## Collect counts
+    (grep { $_%2 } values %C) ## Are all counts event...!
+  ? ()                        ## No return nothing...
+  : [map { $t=$_;             ## Make "n/2" copies of [X,X]
+            map { [$t,$t] } 1..$C{$t}/2
+         } keys %C ]
+}
diff --git a/challenge-249/james-smith/perl/ch-2.pl b/challenge-249/james-smith/perl/ch-2.pl
new file mode 100644
index 0000000000..57f8e70f3a
--- /dev/null
+++ b/challenge-249/james-smith/perl/ch-2.pl
@@ -0,0 +1,4 @@
+sub DI_string_match {
+  my( $n, $x ) = ( 0, length $_[0] );
+  map( { 'I' eq $_ ? $n++ : $x-- } split //, $_[0] ), $n
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index fc021885c0..48d4b173e3 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,15 +1,17 @@
 {
-   "legend" : {
-      "enabled" : 0
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
+   "plotOptions" : {
+      "series" : {
+         "borderWidth" : 0,
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         }
       }
    },
    "series" : [
       {
          "colorByPoint" : 1,
+         "name" : "The Weekly Challenge - 249",
          "data" : [
             {
                "name" : "Arne Sommer",
@@ -17,39 +19,44 @@
                "y" : 3
             },
             {
+               "drilldown" : "Bob Lied",
                "name" : "Bob Lied",
-               "y" : 3,
-               "drilldown" : "Bob Lied"
+               "y" : 3
             },
             {
                "drilldown" : "Dave Jacoby",
-               "y" : 3,
-               "name" : "Dave Jacoby"
+               "name" : "Dave Jacoby",
+               "y" : 3
             },
             {
-               "name" : "David Ferrone",
                "y" : 2,
-               "drilldown" : "David Ferrone"
+               "drilldown" : "David Ferrone",
+               "name" : "David Ferrone"
             },
             {
                "name" : "E. Choroba",
-               "y" : 2,
-               "drilldown" : "E. Choroba"
+               "drilldown" : "E. Choroba",
+               "y" : 2
             },
             {
+               "drilldown" : "James Smith",
+               "name" : "James Smith",
+               "y" : 3
+            },
+            {
+               "y" : 2,
                "name" : "Kjetil Skotheim",
-               "drilldown" : "Kjetil Skotheim",
-               "y" : 2
+               "drilldown" : "Kjetil Skotheim"
             },
             {
-               "y" : 3,
                "drilldown" : "Laurent Rosenfeld",
-               "name" : "Laurent Rosenfeld"
+               "name" : "Laurent Rosenfeld",
+               "y" : 3
             },
             {
-               "y" : 10,
+               "name" : "Luca Ferrari",
                "drilldown" : "Luca Ferrari",
-               "name" : "Luca Ferrari"
+               "y" : 10
             },
             {
                "y" : 2,
@@ -57,19 +64,19 @@
                "name" : "Mark Anderson"
             },
             {
-               "name" : "Packy Anderson",
                "drilldown" : "Packy Anderson",
+               "name" : "Packy Anderson",
                "y" : 5
             },
             {
+               "name" : "Peter Campbell Smith",
                "drilldown" : "Peter Campbell Smith",
-               "y" : 3,
-               "name" : "Peter Campbell Smith"
+               "y" : 3
             },
             {
+               "y" : 2,
                "name" : "Peter Meszaros",
-               "drilldown" : "Peter Meszaros",
-               "y" : 2
+               "drilldown" : "Peter Meszaros"
             },
             {
                "name" : "Robert Ransbottom",
@@ -77,56 +84,56 @@
                "y" : 2
             },
             {
-               "drilldown" : "Roger Bell_West",
                "y" : 4,
+               "drilldown" : "Roger Bell_West",
                "name" : "Roger Bell_West"
             },
             {
-               "drilldown" : "Stephen G. Lynn",
                "y" : 3,
-               "name" : "Stephen G. Lynn"
+               "name" : "Stephen G. Lynn",
+               "drilldown" : "Stephen G. Lynn"
             },
             {
-               "drilldown" : "Thomas Kohler",
                "y" : 4,
-               "name" : "Thomas Kohler"
+               "name" : "Thomas Kohler",
+               "drilldown" : "Thomas Kohler"
             },
             {
-               "y" : 4,
+               "name" : "Ulrich Rieke",
                "drilldown" : "Ulrich Rieke",
-               "name" : "Ulrich Rieke"
+               "y" : 4
             },
             {
-               "drilldown" : "W. Luis Mochan",
                "y" : 3,
-               "name" : "W. Luis Mochan"
+               "name" : "W. Luis Mochan",
+               "drilldown" : "W. Luis Mochan"
             }
-         ],
-         "name" : "The Weekly Challenge - 249"
+         ]
       }
    ],
-   "plotOptions" : {
-      "series" : {
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         },
-         "borderWidth" : 0
+   "subtitle" : {
+      "text" : "[Champions: 19] Last updated at 2023-12-28 21:28:12 GMT"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
       }
    },
+   "legend" : {
+      "enabled" : 0
+   },
    "xAxis" : {
       "type" : "category"
    },
-   "subtitle" : {
-      "text" : "[Champions: 18] Last updated at 2023-12-28 20:38:40 GMT"
-   },
-   "chart" : {
-      "type" : "column"
+   "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/>"
    },
    "drilldown" : {
       "series" : [
          {
-            "name" : "Arne Sommer",
+            "id" : "Arne Sommer",
             "data" : [
                [
                   "Raku",
@@ -137,11 +144,11 @@
                   1
                ]
             ],
-            "id" : "Arne Sommer"
+            "name" : "Arne Sommer"
          },
          {
-            "id" : "Bob Lied",
             "name" : "Bob Lied",
+            "id" : "Bob Lied",
             "data" : [
                [
                   "Perl",
@@ -154,8 +161,8 @@
             ]
          },
          {
-            "id" : "Dave Jacoby",
             "name" : "Dave Jacoby",
+            "id" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -168,37 +175,51 @@
             ]
          },
          {
-            "id" : "David Ferrone",
+            "name" : "David Ferrone",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "David Ferrone"
+            "id" : "David Ferrone"
          },
          {
-            "id" : "E. Choroba",
             "name" : "E. Choroba",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "E. Choroba"
          },
          {
-            "name" : "Kjetil Skotheim",
             "data" : [
                [
                   "Perl",
                   2
+               ],
+               [
+                  "Blog",
+                  1
                ]
             ],
-            "id" : "Kjetil Skotheim"
+            "id" : "James Smith",
+            "name" : "James Smith"
          },
          {
-            "id" : "Laurent Rosenfeld",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Kjetil Skotheim",
+            "name" : "Kjetil Skotheim"
+         },
+         {
+            "name" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl",
@@ -213,11 +234,9 @@
                   1
                ]
             ],
-            "name" : "Laurent Rosenfeld"
+            "id" : "Laurent Rosenfeld"
          },
          {
-            "id" : "Luca Ferrari",
-            "name" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -227,19 +246,22 @@
                   "Blog",
                   8
                ]
-            ]
+            ],
+            "id" : "Luca Ferrari",
+            "name" : "Luca Ferrari"
          },
          {
+            "id" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "name" : "Mark Anderson",
-            "id" : "Mark Anderson"
+            "name" : "Mark Anderson"
          },
          {
+            "name" : "Packy Anderson",
             "id" : "Packy Anderson",
             "data" : [
                [
@@ -254,10 +276,10 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Packy Anderson"
+            ]
          },
          {
+            "id" : "Peter Campbell Smith",
             "data" : [
                [
                   "Perl",
@@ -268,32 +290,31 @@
                   1
                ]
             ],
-            "name" : "Peter Campbell Smith",
-            "id" : "Peter Campbell Smith"
+            "name" : "Peter Campbell Smith"
          },
          {
+            "name" : "Peter Meszaros",
+            "id" : "Peter Meszaros",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "Peter Meszaros",
-            "id" : "Peter Meszaros"
+            ]
          },
          {
-            "name" : "Robert Ransbottom",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "id" : "Robert Ransbottom"
+            "id" : "Robert Ransbottom",
+            "name" : "Robert Ransbottom"
          },
          {
-            "id" : "Roger Bell_West",
             "name" : "Roger Bell_West",
+            "id" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
@@ -306,6 +327,7 @@
             ]
          },
          {
+            "id" : "Stephen G. Lynn",
             "data" : [
                [
                   "Perl",
@@ -316,11 +338,11 @@
                   1
                ]
             ],
-            "name" : "Stephen G. Lynn",
-            "id" : "Stephen G. Lynn"
+            "name" : "Stephen G. Lynn"
          },
          {
             "name" : "Thomas Kohler",
+            "id" : "Thomas Kohler",
             "data" : [
                [
                   "Perl",
@@ -330,11 +352,10 @@
                   "Blog",
                   2
                ]
-            ],
-            "id" : "Thomas Kohler"
+            ]
          },
          {
-            "id" : "Ulrich Rieke",
+            "name" : "Ulrich Rieke",
             "data" : [
                [
                   "Perl",
@@ -345,10 +366,9 @@
                   2
                ]
             ],
-            "name" : "Ulrich Rieke"
+            "id" : "Ulrich Rieke"
          },
          {
-            "id" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -359,16 +379,15 @@
                   1
                ]
             ],
+            "id" : "W. Luis Mochan",
             "name" : "W. Luis Mochan"
          }
       ]
    },
+   "chart" : {
+      "type" : "column"
+   },
    "title" : {
       "text" : "The Weekly Challenge - 249"
-   },
-   "tooltip" : {
-      "followPointer" : 1,
-      "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/>"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 9e207ebed5..8b1f95095b 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,63 +1,63 @@
 {
-   "yAxis" : {
-      "min" : 0,
-      "title" : {
-         "text" : null
-      }
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
-   "subtitle" : {
-      "text" : "Last updated at 2023-12-28 20:38:40 GMT"
-   },
-   "xAxis" : {
-      "labels" : {
-         "style" : {
-            "fontFamily" : "Verdana, sans-serif",
-            "fontSize" : "13px"
-         }
-      },
-      "type" : "category"
-   },
    "series" : [
       {
+         "dataLabels" : {
+            "style" : {
+               "fontFamily" : "Verdana, sans-serif",
+               "fontSize" : "13px"
+            },
+            "format" : "{point.y:.0f}",
+            "align" : "right",
+            "rotation" : -90,
+            "color" : "#FFFFFF",
+            "enabled" : "true",
+            "y" : 10
+         },
          "data" : [
             [
                "Blog",
-               4347
+               4348
             ],
             [
                "Perl",
-               12829
+               12831
             ],
             [
                "Raku",
                7397
             ]
          ],
-         "name" : "Contributions",
-         "dataLabels" : {
-            "format" : "{point.y:.0f}",
-            "rotation" : -90,
-            "style" : {
-               "fontSize" : "13px",
-               "fontFamily" : "Verdana, sans-serif"
-            },
-            "color" : "#FFFFFF",
-            "y" : 10,
-            "align" : "right",
-            "enabled" : "true"
-         }
+         "name" : "Contributions"
       }
    ],
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2023]"
+   "subtitle" : {
+      "text" : "Last updated at 2023-12-28 21:28:12 GMT"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : null
+      },
+      "min" : 0
+   },
+   "xAxis" : {
+      "labels" : {
+         "style" : {
+            "fontFamily" : "Verdana, sans-serif",
+            "fontSize" : "13px"
+         }
+      },
+      "type" : "category"
+   },
+   "legend" : {
+      "enabled" : "false"
    },
    "chart" : {
       "type" : "column"
    },
    "tooltip" : {
       "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2023]"
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index c0aac099cc..20f0f13c24 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,32 +1,27 @@
 {
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         },
+         "borderWidth" : 0
       }
    },
-   "legend" : {
-      "enabled" : "false"
-   },
-   "subtitle" : {
-      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2023-12-28 20:38:40 GMT"
-   },
-   "xAxis" : {
-      "type" : "category"
-   },
    "series" : [
       {
          "colorByPoint" : "true",
          "name" : "The Weekly Challenge Languages",
          "data" : [
             {
-               "name" : "#001",
                "y" : 164,
-               "drilldown" : "001"
+               "drilldown" : "001",
+               "name" : "#001"
             },
             {
+               "drilldown" : "002",
                "name" : "#002",
-               "y" : 129,
-               "drilldown" : "002"
+               "y" : 129
             },
             {
                "name" : "#003",
@@ -34,49 +29,49 @@
                "y" : 87
             },
             {
+               "y" : 103,
                "name" : "#004",
-               "drilldown" : "004",
-               "y" : 103
+               "drilldown" : "004"
             },
             {
+               "drilldown" : "005",
                "name" : "#005",
-               "y" : 80,
-               "drilldown" : "005"
+               "y" : 80
             },
             {
-               "y" : 61,
+               "name" : "#006",
                "drilldown" : "006",
-               "name" : "#006"
+               "y" : 61
             },
             {
                "name" : "#007",
-               "y" : 69,
-               "drilldown" : "007"
+               "drilldown" : "007",
+               "y" : 69
             },
             {
-               "drilldown" : "008",
                "y" : 82,
+               "drilldown" : "008",
                "name" : "#008"
             },
             {
                "name" : "#009",
-               "y" : 80,
-               "drilldown" : "009"
+               "drilldown" : "009",
+               "y" : 80
             },
             {
-               "drilldown" : "010",
                "y" : 69,
-               "name" : "#010"
+               "name" : "#010",
+               "drilldown" : "010"
             },
             {
+               "name" : "#011",
                "drilldown" : "011",
-               "y" : 89,
-               "name" : "#011"
+               "y" : 89
             },
             {
                "drilldown" : "012",
-               "y" : 92,
-               "name" : "#012"
+               "name" : "#012",
+               "y" : 92
             },
             {
                "y" : 87,
@@ -84,14 +79,14 @@
                "name" : "#013"
             },
             {
-               "y" : 102,
                "drilldown" : "014",
-               "name" : "#014"
+               "name" : "#014",
+               "y" : 102
             },
             {
                "drilldown" : "015",
-               "y" : 101,
-               "name" : "#015"
+               "name" : "#015",
+               "y" : 101
             },
             {
                "name" : "#016",
@@ -99,13 +94,13 @@
                "y" : 75
             },
             {
-               "drilldown" : "017",
                "y" : 86,
+               "drilldown" : "017",
                "name" : "#017"
             },
             {
-               "drilldown" : "018",
                "y" : 83,
+               "drilldown" : "018",
                "name" : "#018"
             },
             {
@@ -114,69 +109,69 @@
                "name" : "#019"
             },
             {
-               "drilldown" : "020",
                "y" : 103,
-               "name" : "#020"
+               "name" : "#020",
+               "drilldown" : "020"
             },
             {
+               "drilldown" : "021",
                "name" : "#021",
-               "y" : 74,
-               "drilldown" : "021"
+               "y" : 74
             },
             {
-               "y" : 72,
                "drilldown" : "022",
-               "name" : "#022"
+               "name" : "#022",
+               "y" : 72
             },
             {
+               "name" : "#023",
                "drilldown" : "023",
-               "y" : 101,
-               "name" : "#023"
+               "y" : 101
             },
             {
-               "name" : "#024",
                "y" : 77,
-               "drilldown" : "024"
+               "drilldown" : "024",
+               "name" : "#024"
             },
             {
+               "y" : 62,
                "name" : "#025",
-               "drilldown" : "025",
-               "y" : 62
+               "drilldown" : "025"
             },
             {
-               "y" : 76,
                "drilldown" : "026",
-               "name" : "#026"
+               "name" : "#026",
+               "y" : 76
             },
             {
-               "y" : 64,
                "drilldown" : "027",
-               "name" : "#027"
+               "name" : "#027",
+               "y" : 64
             },
             {
+               "name" : "#028",
                "drilldown" : "028",
-               "y" : 82,
-               "name" : "#028"
+               "y" : 82
             },
             {
-               "name" : "#029",
                "drilldown" : "029",
+               "name" : "#029",
                "y" : 83
             },
             {
+               "name" : "#030",
                "drilldown" : "030",
-               "y" : 121,
-               "name" : "#030"
+               "y" : 121
             },
             {
                "y" : 93,
-               "drilldown" : "031",
-               "name" : "#031"
+               "name" : "#031",
+               "drilldown" : "031"
             },
             {
-               "y" : 98,
                "drilldown" : "032",
-               "name" : "#032"
+               "name" : "#032",
+               "y" : 98
             },
             {
                "y" : 114,
@@ -184,64 +179,64 @@
                "name" : "#033"
             },
             {
-               "y" : 70,
                "drilldown" : "034",
-               "name" : "#034"
+               "name" : "#034",
+               "y" : 70
             },
             {
+               "y" : 68,
                "name" : "#035",
-               "drilldown" : "035",
-               "y" : 68
+               "drilldown" : "035"
             },
             {
-               "name" : "#036",
                "drilldown" : "036",
+               "name" : "#036",
                "y" : 70
             },
             {
-               "drilldown" : "037",
                "y" : 70,
-               "name" : "#037"
+               "name" : "#037",
+               "drilldown" : "037"
             },
             {
-               "name" : "#038",
                "y" : 74,
-               "drilldown" : "038"
+               "drilldown" : "038",
+               "name" : "#038"
             },
             {
-               "y" : 68,
                "drilldown" : "039",
-               "name" : "#039"
+               "name" : "#039",
+               "y" : 68
             },
             {
-               "name" : "#040",
                "y" : 77,
-               "drilldown" : "040"
+               "drilldown" : "040",
+               "name" : "#040"
             },
             {
+               "drilldown" : "041",
                "name" : "#041",
-               "y" : 80,
-               "drilldown" : "041"
+               "y" : 80
             },
             {
-               "name" : "#042",
                "y" : 98,
-               "drilldown" : "042"
+               "drilldown" : "042",
+               "name" : "#042"
             },
             {
-               "drilldown" : "043",
                "y" : 72,
+               "drilldown" : "043",
                "name" : "#043"
             },
             {
+               "drilldown" : "044",
                "name" : "#044",
-               "y" : 90,
-               "drilldown" : "044"
+               "y" : 90
             },
             {
-               "drilldown" : "045",
                "y" : 102,
-               "name" : "#045"
+               "name" : "#045",
+               "drilldown" : "045"
             },
             {
                "y" : 93,
@@ -254,29 +249,29 @@
                "name" : "#047"
             },
             {
-               "name" : "#048",
                "y" : 112,
-               "drilldown" : "048"
+               "drilldown" : "048",
+               "name" : "#048"
             },
             {
-               "name" : "#049",
+               "y" : 93,
                "drilldown" : "049",
-               "y" : 93
+               "name" : "#049"
             },
             {
-               "y" : 104,
+               "name" : "#050",
                "drilldown" : "050",
-               "name" : "#050"
+               "y" : 104
             },
             {
-               "name" : "#051",
                "y" : 95,
+               "name" : "#051",
                "drilldown" : "051"
             },
             {
-               "name" : "#052",
+               "y" : 93,
                "drilldown" : "052",
-               "y" : 93
+               "name" : "#052"
             },
             {
                "y" : 105,
@@ -284,19 +279,19 @@
                "name" : "#053"
             },
             {
-               "y" : 107,
                "drilldown" : "054",
-               "name" : "#054"
+               "name" : "#054",
+               "y" : 107
             },
             {
-               "drilldown" : "055",
                "y" : 92,
-               "name" : "#055"
+               "name" : "#055",
+               "drilldown" : "055"
             },
             {
+               "name" : "#056",
                "drilldown" : "056",
-               "y" : 104,
-               "name" : "#056"
+               "y" : 104
             },
             {
                "name" : "#057",
@@ -310,18 +305,18 @@
             },
             {
                "name" : "#059",
-               "y" : 93,
-               "drilldown" : "059"
+               "drilldown" : "059",
+               "y" : 93
             },
             {
-               "drilldown" : "060",
                "y" : 89,
-               "name" : "#060"
+               "name" : "#060",
+               "drilldown" : "060"
             },
             {
+               "y" : 85,
                "name" : "#061",
-               "drilldown" : "061",
-               "y" : 85
+               "drilldown" : "061"
             },
             {
                "y" : 62,
@@ -329,9 +324,9 @@
                "name" : "#062"
             },
             {
-               "name" : "#063",
+               "y" : 93,
                "drilldown" : "063",
-               "y" : 93
+               "name" : "#063"
             },
             {
                "name" : "#064",
@@ -339,19 +334,19 @@
                "y" : 84
             },
             {
-               "y" : 77,
                "drilldown" : "065",
-               "name" : "#065"
+               "name" : "#065",
+               "y" : 77
             },
             {
-               "name" : "#066",
                "y" : 88,
-               "drilldown" : "066"
+               "drilldown" : "066",
+               "name" : "#066"
             },
             {
+               "y" : 94,