- Added solutions by Eric Cheung.

- Added solutions by Mark Anderson.
- Added solutions by Lubos Kolouch.
- Added solutions by Ali Moradi.
- Added solutions by Feng Chang.
- Added solutions by Andreas Mahnke.
- Added solutions by Peter Campbell Smith.

26 files changed, 761 insertions, 544 deletions

diff --git a/challenge-345/eric-cheung/python/ch-1.py b/challenge-345/eric-cheung/python/ch-1.py
new file mode 100755
index 0000000000..fffcde2be1
--- /dev/null
+++ b/challenge-345/eric-cheung/python/ch-1.py
@@ -0,0 +1,23 @@
+

+## arrInts = [1, 3, 2]  ## Example 1

+## arrInts = [2, 4, 6, 5, 3]  ## Example 2

+## arrInts = [1, 2, 3, 2, 4, 1]  ## Example 3

+## arrInts = [5, 3, 1]  ## Example 4

+arrInts = [1, 5, 1, 5, 1, 5, 1]  ## Example 5

+

+arrOutput = []

+

+for nIndx, nElem in enumerate(arrInts):

+    bIsPeak = False

+

+    if nIndx == 0 and nElem > arrInts[nIndx + 1]:

+        bIsPeak = True

+    elif nIndx == len(arrInts) - 1 and nElem > arrInts[nIndx - 1]:

+        bIsPeak = True

+    elif nElem > arrInts[nIndx - 1] and nElem > arrInts[nIndx + 1]:

+        bIsPeak = True

+

+    if bIsPeak:

+        arrOutput.append(nIndx)

+

+print (arrOutput)

diff --git a/challenge-345/eric-cheung/python/ch-2.py b/challenge-345/eric-cheung/python/ch-2.py
new file mode 100755
index 0000000000..5a4b728ca3
--- /dev/null
+++ b/challenge-345/eric-cheung/python/ch-2.py
@@ -0,0 +1,25 @@
+

+## Ref.:

+## https://leetcode.com/problems/last-visited-integers/description/

+

+## arrInts = [5, -1, -1]  ## Example 1

+## arrInts = [3, 7, -1, -1, -1]  ## Example 2

+## arrInts = [2, -1, 4, -1, -1]  ## Example 3

+## arrInts = [10, 20, -1, 30, -1, -1]  ## Example 4

+## arrInts = [-1, -1, 5, -1]  ## Example 5

+

+## arrInts = [1, 2, -1, -1, -1]  ## Example 6

+arrInts = [1, -1, 2, -1, -1]  ## Example 7

+

+arrSeen = []

+arrAns = []

+arrMinusOne = []

+

+for nElem in arrInts:

+    if nElem > 0:

+        arrSeen.insert(0, nElem)

+    else:

+        arrAns.append(arrSeen[len(arrMinusOne)] if len(arrMinusOne) < len(arrSeen) else nElem)

+        arrMinusOne.append(nElem)

+

+print (arrAns)

diff --git a/stats/pwc-challenge-344.json b/stats/pwc-challenge-344.json
new file mode 100644
index 0000000000..d0d6fdccb6
--- /dev/null
+++ b/stats/pwc-challenge-344.json
@@ -0,0 +1,623 @@
+{
+   "chart" : {
+      "type" : "column"
+   },
+   "drilldown" : {
+      "series" : [
+         {
+            "data" : [
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Ali Moradi",
+            "name" : "Ali Moradi"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Andreas Mahnke",
+            "name" : "Andreas Mahnke"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Andrew Shitov",
+            "name" : "Andrew Shitov"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Arne Sommer",
+            "name" : "Arne Sommer"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  1
+               ]
+            ],
+            "id" : "Asher Harvey-Smith",
+            "name" : "Asher Harvey-Smith"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Athanasius",
+            "name" : "Athanasius"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  1
+               ]
+            ],
+            "id" : "BarrOff",
+            "name" : "BarrOff"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Bob Lied",
+            "name" : "Bob Lied"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "David Ferrone",
+            "name" : "David Ferrone"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "E. Choroba",
+            "name" : "E. Choroba"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Feng Chang",
+            "name" : "Feng Chang"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Jaldhar H. Vyas",
+            "name" : "Jaldhar H. Vyas"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  1
+               ]
+            ],
+            "id" : "Jan Krnavek",
+            "name" : "Jan Krnavek"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Jorg Sommrey",
+            "name" : "Jorg Sommrey"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Lubos Kolouch",
+            "name" : "Lubos Kolouch"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ],
+            "id" : "Luca Ferrari",
+            "name" : "Luca Ferrari"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Mark Anderson",
+            "name" : "Mark Anderson"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Matthew Neleigh",
+            "name" : "Matthew Neleigh"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Matthias Muth",
+            "name" : "Matthias Muth"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ],
+               [
+                  "Raku",
+                  1
+               ]
+            ],
+            "id" : "Mohammad Sajid Anwar",
+            "name" : "Mohammad Sajid Anwar"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Niels van Dijke",
+            "name" : "Niels van Dijke"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Packy Anderson",
+            "name" : "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
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Robbie Hatley",
+            "name" : "Robbie Hatley"
+         },
+         {
+            "data" : [
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Robert Ransbottom",
+            "name" : "Robert Ransbottom"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Roger Bell_West",
+            "name" : "Roger Bell_West"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Simon Green",
+            "name" : "Simon Green"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  2
+               ]
+            ],
+            "id" : "Thomas Kohler",
+            "name" : "Thomas Kohler"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ]
+            ],
+            "id" : "Ulrich Rieke",
+            "name" : "Ulrich Rieke"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  1
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Vinod Kumar K",
+            "name" : "Vinod Kumar K"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "W. Luis Mochan",
+            "name" : "W. Luis Mochan"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Wanderdoc",
+            "name" : "Wanderdoc"
+         }
+      ]
+   },
+   "legend" : {
+      "enabled" : 0
+   },
+   "plotOptions" : {
+      "series" : {
+         "borderWidth" : 0,
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         }
+      }
+   },
+   "series" : [
+      {
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "drilldown" : "Ali Moradi",
+               "name" : "Ali Moradi",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Andreas Mahnke",
+               "name" : "Andreas Mahnke",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Andrew Shitov",
+               "name" : "Andrew Shitov",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Arne Sommer",
+               "name" : "Arne Sommer",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Asher Harvey-Smith",
+               "name" : "Asher Harvey-Smith",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Athanasius",
+               "name" : "Athanasius",
+               "y" : 4
+            },
+            {
+               "drilldown" : "BarrOff",
+               "name" : "BarrOff",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Bob Lied",
+               "name" : "Bob Lied",
+               "y" : 3
+            },
+            {
+               "drilldown" : "David Ferrone",
+               "name" : "David Ferrone",
+               "y" : 2
+            },
+            {
+               "drilldown" : "E. Choroba",
+               "name" : "E. Choroba",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Feng Chang",
+               "name" : "Feng Chang",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Jaldhar H. Vyas",
+               "name" : "Jaldhar H. Vyas",
+               "y" : 5
+            },
+            {
+               "drilldown" : "Jan Krnavek",
+               "name" : "Jan Krnavek",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Jorg Sommrey",
+               "name" : "Jorg Sommrey",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Lubos Kolouch",
+               "name" : "Lubos Kolouch",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Luca Ferrari",
+               "name" : "Luca Ferrari",
+               "y" : 4
+            },
+            {
+               "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Matthew Neleigh",
+               "name" : "Matthew Neleigh",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Matthias Muth",
+               "name" : "Matthias Muth",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Mohammad Sajid Anwar",
+               "name" : "Mohammad Sajid Anwar",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Niels van Dijke",
+               "name" : "Niels van Dijke",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Packy Anderson",
+               "name" : "Packy Anderson",
+               "y" : 5
+            },
+            {
+               "drilldown" : "Peter Campbell Smith",
+               "name" : "Peter Campbell Smith",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Peter Meszaros",
+               "name" : "Peter Meszaros",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Robbie Hatley",
+               "name" : "Robbie Hatley",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Robert Ransbottom",
+               "name" : "Robert Ransbottom",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Roger Bell_West",
+               "name" : "Roger Bell_West",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Simon Green",
+               "name" : "Simon Green",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Thomas Kohler",
+               "name" : "Thomas Kohler",
+               "y" : 4
+            },
+            {
+               "drilldown" : "Ulrich Rieke",
+               "name" : "Ulrich Rieke",
+               "y" : 4
+            },
+            {
+               "drilldown" : "Vinod Kumar K",
+               "name" : "Vinod Kumar K",
+               "y" : 4
+            },
+            {
+               "drilldown" : "W. Luis Mochan",
+               "name" : "W. Luis Mochan",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Wanderdoc",
+               "name" : "Wanderdoc",
+               "y" : 2
+            }
+         ],
+         "name" : "The Weekly Challenge - 344"
+      }
+   ],
+   "subtitle" : {
+      "text" : "[Champions: 33] Last updated at 2025-10-27 14:34:48 GMT"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 344"
+   },
+   "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/>"
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   }
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 015103105b..9fbe1f9332 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -7,84 +7,6 @@
          {
             "data" : [
                [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Ali Moradi",
-            "name" : "Ali Moradi"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Andreas Mahnke",
-            "name" : "Andreas Mahnke"
-         },
-         {
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "id" : "Andrew Shitov",
-            "name" : "Andrew Shitov"
-         },
-         {
-            "data" : [
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Arne Sommer",
-            "name" : "Arne Sommer"
-         },
-         {
-            "data" : [
-               [
-                  "Raku",
-                  1
-               ]
-            ],
-            "id" : "Asher Harvey-Smith",
-            "name" : "Asher Harvey-Smith"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ]
-            ],
-            "id" : "Athanasius",
-            "name" : "Athanasius"
-         },
-         {
-            "data" : [
-               [
-                  "Raku",
-                  1
-               ]
-            ],
-            "id" : "BarrOff",
-            "name" : "BarrOff"
-         },
-         {
-            "data" : [
-               [
                   "Perl",
                   2
                ],
@@ -93,18 +15,8 @@
                   1
                ]
             ],
-            "id" : "Bob Lied",
-            "name" : "Bob Lied"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "David Ferrone",
-            "name" : "David Ferrone"
+            "id" : "Ali Moradi",
+            "name" : "Ali Moradi"
          },
          {
             "data" : [
@@ -113,8 +25,8 @@
                   2
                ]
             ],
-            "id" : "E. Choroba",
-            "name" : "E. Choroba"
+            "id" : "Andreas Mahnke",
+            "name" : "Andreas Mahnke"
          },
          {
             "data" : [
@@ -131,48 +43,6 @@
                [
                   "Perl",
                   2
-               ],
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Jaldhar H. Vyas",
-            "name" : "Jaldhar H. Vyas"
-         },
-         {
-            "data" : [
-               [
-                  "Raku",
-                  1
-               ]
-            ],
-            "id" : "Jan Krnavek",
-            "name" : "Jan Krnavek"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Jorg Sommrey",
-            "name" : "Jorg Sommrey"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
                ]
             ],
             "id" : "Lubos Kolouch",
@@ -183,20 +53,6 @@
                [
                   "Raku",
                   2
-               ],
-               [
-                  "Blog",
-                  2
-               ]
-            ],
-            "id" : "Luca Ferrari",
-            "name" : "Luca Ferrari"
-         },
-         {
-            "data" : [
-               [
-                  "Raku",
-                  2
                ]
             ],
             "id" : "Mark Anderson",
@@ -207,72 +63,6 @@
                [
                   "Perl",
                   2
-               ]
-            ],
-            "id" : "Matthew Neleigh",
-            "name" : "Matthew Neleigh"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Matthias Muth",
-            "name" : "Matthias Muth"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  1
-               ],
-               [
-                  "Raku",
-                  1
-               ]
-            ],
-            "id" : "Mohammad Sajid Anwar",
-            "name" : "Mohammad Sajid Anwar"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Niels van Dijke",
-            "name" : "Niels van Dijke"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ],
-               [
-                  "Raku",
-                  2
-               ],
-               [
-                  "Blog",
-                  1
-               ]
-            ],
-            "id" : "Packy Anderson",
-            "name" : "Packy Anderson"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
                ],
                [
                   "Blog",
@@ -281,138 +71,6 @@
             ],
             "id" : "Peter Campbell Smith",
             "name" : "Peter Campbell Smith"
-         },
-         {
-            "data" : [
-               [
-                  "Perl",
-                  2
-               ]
-            ],
-            "id" : "Peter Meszaros",
-            "name" : "Peter Meszaros"
-         },
-         {
-            "data" : [
-               [
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