- Added solutions by Bob Lied.

- Added solutions by David Ferrone.
- Added solutions by W. Luis Mochan.
- Added solutions by Mark Anderson.
- Added solutions by Niels van Dijke.

21 files changed, 3306 insertions, 3122 deletions

diff --git a/challenge-248/eric-cheung/python/ch-1.py b/challenge-248/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..6a7dab3628
--- /dev/null
+++ b/challenge-248/eric-cheung/python/ch-1.py
@@ -0,0 +1,21 @@
+

+## Example 1

+## strInput = "loveleetcode"

+## strChar = "e"

+

+## Example 2

+strInput = "aaab"

+strChar = "b"

+

+arrCharIndx = [nIndx for nIndx in range(len(strInput)) if strInput[nIndx] == strChar]

+arrOutput = []

+

+for nIndx in range(len(strInput)):

+    if strInput[nIndx] == strChar:

+        arrOutput.append(0)

+    elif nIndx < arrCharIndx[0]:

+        arrOutput.append(arrCharIndx[0] - nIndx)

+    else:

+        arrOutput.append(min([abs(nLoop - nIndx) for nLoop in arrCharIndx]))

+

+print (arrOutput)

diff --git a/challenge-248/eric-cheung/python/ch-2.py b/challenge-248/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..61e8e84fd1
--- /dev/null
+++ b/challenge-248/eric-cheung/python/ch-2.py
@@ -0,0 +1,13 @@
+

+## arrMatrixInput = [[1,  2,  3,  4], [5,  6,  7,  8], [9, 10, 11, 12]]  ## Example 1

+arrMatrixInput = [[1, 0, 0, 0], [0, 1, 0, 0], [0, 0, 1, 0], [0, 0, 0, 1]]  ## Example 2

+

+arrMatrixOutput = []

+

+for nRow in range(len(arrMatrixInput) - 1):

+    arrRow = []

+    for nCol in range(len(arrMatrixInput[nRow]) - 1):

+        arrRow.append(arrMatrixInput[nRow][nCol] + arrMatrixInput[nRow][nCol + 1] + arrMatrixInput[nRow + 1][nCol] + arrMatrixInput[nRow + 1][nCol + 1])

+    arrMatrixOutput.append(arrRow)

+

+print (arrMatrixOutput)

diff --git a/challenge-248/perlboy1967/perl/ch1.pl b/challenge-248/perlboy1967/perl/ch-1.pl
index f8936a8df4..f8936a8df4 100755
--- a/challenge-248/perlboy1967/perl/ch1.pl
+++ b/challenge-248/perlboy1967/perl/ch-1.pl
diff --git a/challenge-248/perlboy1967/perl/ch2.pl b/challenge-248/perlboy1967/perl/ch-2.pl
index 3e7dfe51cd..3e7dfe51cd 100755
--- a/challenge-248/perlboy1967/perl/ch2.pl
+++ b/challenge-248/perlboy1967/perl/ch-2.pl
diff --git a/stats/pwc-challenge-247.json b/stats/pwc-challenge-247.json
new file mode 100644
index 0000000000..aedb2cfcef
--- /dev/null
+++ b/stats/pwc-challenge-247.json
@@ -0,0 +1,499 @@
+{
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
+         "borderWidth" : 0
+      }
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 247"
+   },
+   "series" : [
+      {
+         "data" : [
+            {
+               "name" : "Arne Sommer",
+               "drilldown" : "Arne Sommer",
+               "y" : 3
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Athanasius",
+               "name" : "Athanasius"
+            },
+            {
+               "name" : "BarrOff",
+               "drilldown" : "BarrOff",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "name" : "Bob Lied",
+               "drilldown" : "Bob Lied"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Bruce Gray",
+               "name" : "Bruce Gray"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Cheok-Yin Fung",
+               "name" : "Cheok-Yin Fung"
+            },
+            {
+               "name" : "David Ferrone",
+               "drilldown" : "David Ferrone",
+               "y" : 2
+            },
+            {
+               "name" : "E. Choroba",
+               "drilldown" : "E. Choroba",
+               "y" : 2
+            },
+            {
+               "y" : 3,
+               "drilldown" : "Jorg Sommrey",
+               "name" : "Jorg Sommrey"
+            },
+            {
+               "y" : 3,
+               "name" : "Laurent Rosenfeld",
+               "drilldown" : "Laurent Rosenfeld"
+            },
+            {
+               "drilldown" : "Lubos Kolouch",
+               "name" : "Lubos Kolouch",
+               "y" : 5
+            },
+            {
+               "y" : 10,
+               "drilldown" : "Luca Ferrari",
+               "name" : "Luca Ferrari"
+            },
+            {
+               "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson",
+               "y" : 2
+            },
+            {
+               "name" : "Matthew Neleigh",
+               "drilldown" : "Matthew Neleigh",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Nelo Tovar",
+               "name" : "Nelo Tovar",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "name" : "Niels van Dijke",
+               "drilldown" : "Niels van Dijke"
+            },
+            {
+               "name" : "Packy Anderson",
+               "drilldown" : "Packy Anderson",
+               "y" : 5
+            },
+            {
+               "drilldown" : "Peter Campbell Smith",
+               "name" : "Peter Campbell Smith",
+               "y" : 3
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Peter Meszaros",
+               "name" : "Peter Meszaros"
+            },
+            {
+               "y" : 5,
+               "drilldown" : "Roger Bell_West",
+               "name" : "Roger Bell_West"
+            },
+            {
+               "y" : 3,
+               "name" : "Simon Green",
+               "drilldown" : "Simon Green"
+            },
+            {
+               "y" : 3,
+               "name" : "Stephen G. Lynn",
+               "drilldown" : "Stephen G. Lynn"
+            },
+            {
+               "y" : 4,
+               "name" : "Thomas Kohler",
+               "drilldown" : "Thomas Kohler"
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Ulrich Rieke",
+               "name" : "Ulrich Rieke"
+            },
+            {
+               "drilldown" : "W. Luis Mochan",
+               "name" : "W. Luis Mochan",
+               "y" : 3
+            }
+         ],
+         "colorByPoint" : 1,
+         "name" : "The Weekly Challenge - 247"
+      }
+   ],
+   "drilldown" : {
+      "series" : [
+         {
+            "name" : "Arne Sommer",
+            "id" : "Arne Sommer",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ]
+         },
+         {
+            "id" : "Athanasius",
+            "name" : "Athanasius",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ],
+               [
+                  "Raku",
+                  1
+               ]
+            ]
+         },
+         {
+            "id" : "BarrOff",
+            "name" : "BarrOff",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ],
+               [
+                  "Raku",
+                  1
+               ]
+            ]
+         },
+         {
+            "id" : "Bob Lied",
+            "name" : "Bob Lied",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "id" : "Bruce Gray",
+            "name" : "Bruce Gray",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ]
+         },
+         {
+            "name" : "Cheok-Yin Fung",
+            "id" : "Cheok-Yin Fung",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "David Ferrone",
+            "id" : "David Ferrone"
+         },
+         {
+            "name" : "E. Choroba",
+            "id" : "E. Choroba",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "id" : "Jorg Sommrey",
+            "name" : "Jorg Sommrey",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ]
+         },
+         {
+            "id" : "Laurent Rosenfeld",
+            "name" : "Laurent Rosenfeld",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ],
+               [
+                  "Raku",
+                  1
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Lubos Kolouch",
+            "name" : "Lubos Kolouch"
+         },
+         {
+            "id" : "Luca Ferrari",
+            "name" : "Luca Ferrari",
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  8
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Mark Anderson",
+            "name" : "Mark Anderson"
+         },
+         {
+            "name" : "Matthew Neleigh",
+            "id" : "Matthew Neleigh",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "name" : "Nelo Tovar",
+            "id" : "Nelo Tovar"
+         },
+         {
+            "name" : "Niels van Dijke",
+            "id" : "Niels van Dijke",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "name" : "Packy Anderson",
+            "id" : "Packy Anderson"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Peter Campbell Smith",
+            "name" : "Peter Campbell Smith"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Peter Meszaros",
+            "name" : "Peter Meszaros"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Roger Bell_West",
+            "name" : "Roger Bell_West"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "name" : "Simon Green",
+            "id" : "Simon Green"
+         },
+         {
+            "name" : "Stephen G. Lynn",
+            "id" : "Stephen G. Lynn",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ]
+         },
+         {
+            "name" : "Thomas Kohler",
+            "id" : "Thomas Kohler",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ]
+         },
+         {
+            "id" : "Ulrich Rieke",
+            "name" : "Ulrich Rieke",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ]
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "W. Luis Mochan",
+            "name" : "W. Luis Mochan"
+         }
+      ]
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "legend" : {
+      "enabled" : 0
+   },
+   "subtitle" : {
+      "text" : "[Champions: 25] Last updated at 2023-12-18 13:16:20 GMT"
+   },
+   "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-current.json b/stats/pwc-current.json
index 4f0b80d965..fbc5620f5e 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,227 +1,20 @@
 {
-   "legend" : {
-      "enabled" : 0
-   },
-   "subtitle" : {
-      "text" : "[Champions: 25] Last updated at 2023-12-17 21:18:08 GMT"
-   },
-   "series" : [
-      {
-         "name" : "The Weekly Challenge - 247",
-         "colorByPoint" : 1,
-         "data" : [
-            {
-               "name" : "Arne Sommer",
-               "y" : 3,
-               "drilldown" : "Arne Sommer"
-            },
-            {
-               "drilldown" : "Athanasius",
-               "name" : "Athanasius",
-               "y" : 2
-            },
-            {
-               "name" : "BarrOff",
-               "y" : 2,
-               "drilldown" : "BarrOff"
-            },
-            {
-               "drilldown" : "Bob Lied",
-               "name" : "Bob Lied",
-               "y" : 2
-            },
-            {
-               "name" : "Bruce Gray",
-               "y" : 2,
-               "drilldown" : "Bruce Gray"
-            },
-            {
-               "y" : 1,
-               "name" : "Cheok-Yin Fung",
-               "drilldown" : "Cheok-Yin Fung"
-            },
-            {
-               "drilldown" : "David Ferrone",
-               "y" : 2,
-               "name" : "David Ferrone"
-            },
-            {
-               "name" : "E. Choroba",
-               "y" : 2,
-               "drilldown" : "E. Choroba"
-            },
-            {
-               "name" : "Jorg Sommrey",
-               "y" : 3,
-               "drilldown" : "Jorg Sommrey"
-            },
-            {
-               "y" : 3,
-               "name" : "Laurent Rosenfeld",
-               "drilldown" : "Laurent Rosenfeld"
-            },
-            {
-               "drilldown" : "Lubos Kolouch",
-               "y" : 5,
-               "name" : "Lubos Kolouch"
-            },
-            {
-               "y" : 10,
-               "name" : "Luca Ferrari",
-               "drilldown" : "Luca Ferrari"
-            },
-            {
-               "drilldown" : "Mark Anderson",
-               "name" : "Mark Anderson",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Matthew Neleigh",
-               "y" : 2,
-               "name" : "Matthew Neleigh"
-            },
-            {
-               "y" : 2,
-               "name" : "Nelo Tovar",
-               "drilldown" : "Nelo Tovar"
-            },
-            {
-               "name" : "Niels van Dijke",
-               "y" : 2,
-               "drilldown" : "Niels van Dijke"
-            },
-            {
-               "y" : 5,
-               "name" : "Packy Anderson",
-               "drilldown" : "Packy Anderson"
-            },
-            {
-               "name" : "Peter Campbell Smith",
-               "y" : 3,
-               "drilldown" : "Peter Campbell Smith"
-            },
-            {
-               "name" : "Peter Meszaros",
-               "y" : 2,
-               "drilldown" : "Peter Meszaros"
-            },
-            {
-               "name" : "Roger Bell_West",
-               "y" : 5,
-               "drilldown" : "Roger Bell_West"
-            },
-            {
-               "drilldown" : "Simon Green",
-               "y" : 3,
-               "name" : "Simon Green"
-            },
-            {
-               "name" : "Stephen G. Lynn",
-               "y" : 3,
-               "drilldown" : "Stephen G. Lynn"
-            },
-            {
-               "drilldown" : "Thomas Kohler",
-               "name" : "Thomas Kohler",
-               "y" : 4
-            },
-            {
-               "y" : 4,
-               "name" : "Ulrich Rieke",
-               "drilldown" : "Ulrich Rieke"
-            },
-            {
-               "drilldown" : "W. Luis Mochan",
-               "name" : "W. Luis Mochan",
-               "y" : 3
-            }
-         ]
-      }
-   ],
-   "plotOptions" : {
-      "series" : {
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         },
-         "borderWidth" : 0
-      }
+   "xAxis" : {
+      "type" : "category"
    },
    "drilldown" : {
       "series" : [
          {
-            "name" : "Arne Sommer",
-            "id" : "Arne Sommer",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ]
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  1
-               ],
-               [
-                  "Raku",
-                  1
-               ]
-            ],
-            "id" : "Athanasius",
-            "name" : "Athanasius"
-         },
-         {
-            "name" : "BarrOff",
-            "id" : "BarrOff",
-            "data" : [
-               [
-                  "Perl",
-                  1
-               ],
-               [
-                  "Raku",
-                  1
-               ]
-            ]
-         },
-         {
+            "id" : "Bob Lied",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Bob Lied",
             "name" : "Bob Lied"
          },
          {
-            "name" : "Bruce Gray",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "id" : "Bruce Gray"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  1
-               ]
-            ],
-            "id" : "Cheok-Yin Fung",
-            "name" : "Cheok-Yin Fung"
-         },
-         {
             "name" : "David Ferrone",
             "data" : [
                [
@@ -232,238 +25,27 @@
             "id" : "David Ferrone"
          },
          {
-            "name" : "E. Choroba",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "E. Choroba"
-         },
-         {
-            "name" : "Jorg Sommrey",
-            "id" : "Jorg Sommrey",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ]
-         },
-         {
-            "name" : "Laurent Rosenfeld",
-            "data" : [
-               [
-                  "Perl",
-                  1
-               ],
-               [
-                  "Raku",
-                  1
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Laurent Rosenfeld"
-         },
-         {
-            "name" : "Lubos Kolouch",
-            "id" : "Lubos Kolouch",
+            "name" : "Mark Anderson",
             "data" : [
                [
-                  "Perl",
-                  2
-               ],
-               [
                   "Raku",
                   2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ]
-         },
-         {
-            "id" : "Luca Ferrari",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  8
-               ]
-            ],
-            "name" : "Luca Ferrari"
-         },
-         {
-            "id" : "Mark Anderson",
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "name" : "Mark Anderson"
-         },
-         {
-            "name" : "Matthew Neleigh",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Matthew Neleigh"
-         },
-         {
-            "id" : "Nelo Tovar",
-            "data" : [
-               [
-                  "Perl",
-                  2
                ]
             ],
-            "name" : "Nelo Tovar"
+            "id" : "Mark Anderson"
          },
          {
-            "name" : "Niels van Dijke",
             "id" : "Niels van Dijke",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
-         },
-         {
-            "id" : "Packy Anderson",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "name" : "Packy Anderson"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Peter Campbell Smith",
-            "name" : "Peter Campbell Smith"
-         },
-         {
-            "name" : "Peter Meszaros",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
             ],
-            "id" : "Peter Meszaros"
-         },
-         {
-            "name" : "Roger Bell_West",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Roger Bell_West"
-         },
-         {
-            "name" : "Simon Green",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Simon Green"
-         },
-         {
-            "id" : "Stephen G. Lynn",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "name" : "Stephen G. Lynn"
-         },
-         {
-            "name" : "Thomas Kohler",
-            "id" : "Thomas Kohler",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  2
-               ]
-            ]
-         },
-         {
-            "name" : "Ulrich Rieke",
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "id" : "Ulrich Rieke"
+            "name" : "Niels van Dijke"
          },
          {
             "name" : "W. Luis Mochan",
-            "id" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -473,27 +55,73 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "W. Luis Mochan"
          }