- Added solutions by Robert DiCicco.

16 files changed, 2019 insertions, 1926 deletions

diff --git a/challenge-145/robert-dicicco/perl/ch-1.pl b/challenge-145/robert-dicicco/perl/ch-1.pl
new file mode 100644
index 0000000000..8ddbae5f89
--- /dev/null
+++ b/challenge-145/robert-dicicco/perl/ch-1.pl
@@ -0,0 +1,40 @@
+#!perl.exe
+
+use strict;
+use warnings;
+use Test::More;
+
+### Challenge #145  Dot Product
+### Author --- Robert DiCicco
+### Date --- 27-DEC-2021
+
+my @a = qw( 1 2 3 );
+my @b = qw( 4 -5 6 );
+my $dotprod = dpcalc( \@a, \@b, scalar(@a) );
+
+is($dotprod, 12, "dot product of \(@a\) and \(@b\)");
+
+@a = qw( -4 -9 );
+@b = qw( -1 2 );
+$dotprod = dpcalc( \@a, \@b, scalar(@a) );
+
+is($dotprod, -14, "dot product of \(@a\) and \(@b\)");
+
+@a = qw( 6 -1 3);
+@b = qw( 4 18 -2);
+
+$dotprod = dpcalc( \@a, \@b, scalar(@a) );
+
+is($dotprod, 0, "dot product of \(@a\) and \(@b\)");
+
+done_testing;
+
+sub dpcalc {
+    my ($aref, $bref, $len) = @_;
+    my $val = 0;
+    foreach my $i ( 0 .. ($len - 1) ){
+       $val += $aref->[$i] * $bref->[$i];
+    }
+
+    return($val);
+}
diff --git a/challenge-145/robert-dicicco/perl/ch-2.pl b/challenge-145/robert-dicicco/perl/ch-2.pl
new file mode 100644
index 0000000000..e73b1d07df
--- /dev/null
+++ b/challenge-145/robert-dicicco/perl/ch-2.pl
@@ -0,0 +1,38 @@
+#!perl.exe
+
+use strict;
+use warnings;
+use List::MoreUtils qw ( uniq );
+
+### Challenge #145  Palindromic Tree
+### Author --- Robert DiCicco
+### Date --- 27-DEC-2021
+
+my $str = $ARGV[0];
+
+my @results = ();
+for my $i ( 0 .. (length($str) - 1)){
+    my $search = substr($str, $i, 1);
+    my $start = index($str, $search);
+    my $end = index($str, $search, $start + 1);
+
+    if($end == -1){
+        push(@results, $search);
+        next;
+    }
+
+    my $s = substr($str, $start, $end - $start + 1);
+    if($s eq reverse($s)){
+        push(@results, "$search" . " $s");
+    } else {
+        push(@results, $search);
+    }
+
+    @results = uniq(@results);
+}
+
+foreach(@results){
+    print("$_ ");
+}
+
+print("\n");
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 6f78d8cf6a..2998234038 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -2,20 +2,106 @@
    "title" : {
       "text" : "The Weekly Challenge - 145"
    },
+   "legend" : {
+      "enabled" : 0
+   },
+   "tooltip" : {
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1
+   },
+   "series" : [
+      {
+         "name" : "The Weekly Challenge - 145",
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "drilldown" : "Andrew Shitov",
+               "y" : 1,
+               "name" : "Andrew Shitov"
+            },
+            {
+               "drilldown" : "Dave Jacoby",
+               "name" : "Dave Jacoby",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Laurent Rosenfeld",
+               "name" : "Laurent Rosenfeld",
+               "y" : 3
+            },
+            {
+               "name" : "Mark Anderson",
+               "y" : 1,
+               "drilldown" : "Mark Anderson"
+            },
+            {
+               "name" : "Mohammad S Anwar",
+               "y" : 1,
+               "drilldown" : "Mohammad S Anwar"
+            },
+            {
+               "name" : "Olivier Delouya",
+               "y" : 1,
+               "drilldown" : "Olivier Delouya"
+            },
+            {
+               "drilldown" : "Paulo Custodio",
+               "y" : 2,
+               "name" : "Paulo Custodio"
+            },
+            {
+               "drilldown" : "Peter Campbell Smith",
+               "y" : 3,
+               "name" : "Peter Campbell Smith"
+            },
+            {
+               "name" : "Robert DiCicco",
+               "y" : 2,
+               "drilldown" : "Robert DiCicco"
+            },
+            {
+               "y" : 5,
+               "name" : "Roger Bell_West",
+               "drilldown" : "Roger Bell_West"
+            },
+            {
+               "name" : "W. Luis Mochan",
+               "y" : 3,
+               "drilldown" : "W. Luis Mochan"
+            }
+         ]
+      }
+   ],
+   "subtitle" : {
+      "text" : "[Champions: 11] Last updated at 2021-12-28 13:42:53 GMT"
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
    "drilldown" : {
       "series" : [
          {
+            "name" : "Andrew Shitov",
             "id" : "Andrew Shitov",
             "data" : [
                [
                   "Raku",
                   1
                ]
-            ],
-            "name" : "Andrew Shitov"
+            ]
          },
          {
             "id" : "Dave Jacoby",
+            "name" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -25,8 +111,7 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Dave Jacoby"
+            ]
          },
          {
             "id" : "Laurent Rosenfeld",
@@ -47,34 +132,34 @@
             ]
          },
          {
+            "name" : "Mark Anderson",
             "id" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   1
                ]
-            ],
-            "name" : "Mark Anderson"
+            ]
          },
          {
-            "id" : "Mohammad S Anwar",
             "data" : [
                [
                   "Perl",
                   1
                ]
             ],
+            "id" : "Mohammad S Anwar",
             "name" : "Mohammad S Anwar"
          },
          {
+            "name" : "Olivier Delouya",
             "id" : "Olivier Delouya",
             "data" : [
                [
                   "Perl",
                   1
                ]
-            ],
-            "name" : "Olivier Delouya"
+            ]
          },
          {
             "data" : [
@@ -87,7 +172,6 @@
             "id" : "Paulo Custodio"
          },
          {
-            "name" : "Peter Campbell Smith",
             "data" : [
                [
                   "Perl",
@@ -98,11 +182,20 @@
                   1
                ]
             ],
-            "id" : "Peter Campbell Smith"
+            "id" : "Peter Campbell Smith",
+            "name" : "Peter Campbell Smith"
+         },
+         {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
+            "id" : "Robert DiCicco",
+            "name" : "Robert DiCicco"
          },
          {
-            "id" : "Roger Bell_West",
-            "name" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
@@ -116,10 +209,11 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "name" : "Roger Bell_West",
+            "id" : "Roger Bell_West"
          },
          {
-            "name" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -130,97 +224,18 @@
                   1
                ]
             ],
+            "name" : "W. Luis Mochan",
             "id" : "W. Luis Mochan"
          }
       ]
    },
-   "xAxis" : {
-      "type" : "category"
-   },
-   "series" : [
-      {
-         "colorByPoint" : 1,
-         "data" : [
-            {
-               "drilldown" : "Andrew Shitov",
-               "y" : 1,
-               "name" : "Andrew Shitov"
-            },
-            {
-               "name" : "Dave Jacoby",
-               "y" : 3,
-               "drilldown" : "Dave Jacoby"
-            },
-            {
-               "y" : 3,
-               "name" : "Laurent Rosenfeld",
-               "drilldown" : "Laurent Rosenfeld"
-            },
-            {
-               "drilldown" : "Mark Anderson",
-               "y" : 1,
-               "name" : "Mark Anderson"
-            },
-            {
-               "drilldown" : "Mohammad S Anwar",
-               "name" : "Mohammad S Anwar",
-               "y" : 1
-            },
-            {
-               "drilldown" : "Olivier Delouya",
-               "y" : 1,
-               "name" : "Olivier Delouya"
-            },
-            {
-               "y" : 2,
-               "name" : "Paulo Custodio",
-               "drilldown" : "Paulo Custodio"
-            },
-            {
-               "drilldown" : "Peter Campbell Smith",
-               "name" : "Peter Campbell Smith",
-               "y" : 3
-            },
-            {
-               "drilldown" : "Roger Bell_West",
-               "name" : "Roger Bell_West",
-               "y" : 5
-            },
-            {
-               "y" : 3,
-               "name" : "W. Luis Mochan",
-               "drilldown" : "W. Luis Mochan"
-            }
-         ],
-         "name" : "The Weekly Challenge - 145"
-      }
-   ],
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "legend" : {
-      "enabled" : 0
-   },
    "plotOptions" : {
       "series" : {
+         "borderWidth" : 0,
          "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         },
-         "borderWidth" : 0
+            "format" : "{point.y}",
+            "enabled" : 1
+         }
       }
-   },
-   "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/>"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 10] Last updated at 2021-12-28 13:12:42 GMT"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 9df0bf05a8..0f7e3a6828 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,21 +1,21 @@
 {
-   "chart" : {
-      "type" : "column"
-   },
    "subtitle" : {
-      "text" : "Last updated at 2021-12-28 13:12:42 GMT"
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
-   },
-   "legend" : {
-      "enabled" : "false"
+      "text" : "Last updated at 2021-12-28 13:42:53 GMT"
    },
    "series" : [
       {
+         "dataLabels" : {
+            "color" : "#FFFFFF",
+            "rotation" : -90,
+            "format" : "{point.y:.0f}",
+            "style" : {
+               "fontSize" : "13px",
+               "fontFamily" : "Verdana, sans-serif"
+            },
+            "enabled" : "true",
+            "y" : 10,
+            "align" : "right"
+         },
          "data" : [
             [
                "Blog",
@@ -23,41 +23,41 @@
             ],
             [
                "Perl",
-               6970
+               6972
             ],
             [
                "Raku",
                4194
             ]
          ],
-         "name" : "Contributions",
-         "dataLabels" : {
-            "color" : "#FFFFFF",
-            "y" : 10,
-            "format" : "{point.y:.0f}",
-            "enabled" : "true",
-            "align" : "right",
-            "rotation" : -90,
-            "style" : {
-               "fontSize" : "13px",
-               "fontFamily" : "Verdana, sans-serif"
-            }
-         }
+         "name" : "Contributions"
       }
    ],
-   "yAxis" : {
-      "title" : {
-         "text" : null
-      },
-      "min" : 0
+   "legend" : {
+      "enabled" : "false"
+   },
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
    },
    "xAxis" : {
       "labels" : {
          "style" : {
-            "fontSize" : "13px",
-            "fontFamily" : "Verdana, sans-serif"
+            "fontFamily" : "Verdana, sans-serif",
+            "fontSize" : "13px"
          }
       },
       "type" : "category"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : null
+      },
+      "min" : 0
+   },
+   "chart" : {
+      "type" : "column"
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 09e1f1e5c5..819d3b70ca 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,751 +1,4 @@
 {
-   "xAxis" : {
-      "type" : "category"
-   },
-   "series" : [
-      {
-         "colorByPoint" : "true",
-         "name" : "The Weekly Challenge Languages",
-         "data" : [
-            {
-               "drilldown" : "001",
-               "y" : 161,
-               "name" : "#001"
-            },
-            {
-               "name" : "#002",
-               "y" : 125,
-               "drilldown" : "002"
-            },
-            {
-               "drilldown" : "003",
-               "y" : 83,
-               "name" : "#003"
-            },
-            {
-               "y" : 99,
-               "name" : "#004",
-               "drilldown" : "004"
-            },
-            {
-               "name" : "#005",
-               "y" : 78,
-               "drilldown" : "005"
-            },
-            {
-               "drilldown" : "006",
-               "name" : "#006",
-               "y" : 58
-            },
-            {
-               "y" : 64,
-               "name" : "#007",
-               "drilldown" : "007"
-            },
-            {
-               "drilldown" : "008",
-               "y" : 78,
-               "name" : "#008"
-            },
-            {
-               "drilldown" : "009",
-               "name" : "#009",
-               "y" : 76
-            },
-            {
-               "y" : 65,
-               "name" : "#010",
-               "drilldown" : "010"
-            },
-            {
-               "y" : 85,
-               "name" : "#011",
-               "drilldown" : "011"
-            },
-            {
-               "drilldown" : "012",
-               "y" : 89,
-               "name" : "#012"
-            },
-            {
-               "drilldown" : "013",
-               "name" : "#013",
-               "y" : 85
-            },
-            {
-               "drilldown" : "014",
-               "y" : 101,
-               "name" : "#014"
-            },
-            {
-               "name" : "#015",
-               "y" : 99,
-               "drilldown" : "015"
-            },
-            {
-               "y" : 71,
-               "name" : "#016",
-               "drilldown" : "016"
-            },
-            {
-               "y" : 84,
-               "name" : "#017",
-               "drilldown" : "017"
-            },
-            {
-               "drilldown" : "018",
-               "y" : 81,
-               "name" : "#018"
-            },
-            {
-               "drilldown" : "019",
-               "y" : 103,
-               "name" : "#019"
-            },
-            {
-               "drilldown" : "020",
-               "y" : 101,
-               "name" : "#020"
-            },
-            {
-               "name" : "#021",
-               "y" : 72,
-               "drilldown" : "021"
-            },
-            {
-               "y" : 68,
-               "name" : "#022",
-               "drilldown" : "022"
-            },
-            {
-               "drilldown" : "023",
-               "name" : "#023",
-               "y" : 97
-            },
-            {
-               "y" : 75,
-               "name" : "#024",
-               "drilldown" : "024"
-            },
-            {
-               "name" : "#025",
-               "y" : 59,
-               "drilldown" : "025"
-            },
-            {
-               "y" : 74,
-               "name" : "#026",
-               "drilldown" : "026"
-            },
-            {
-               "name" : "#027",
-               "y" : 62,
-               "drilldown" : "027"
-            },
-            {
-               "drilldown" : "028",
-               "name" : "#028",
-               "y" : 82
-            },
-            {
-               "drilldown" : "029",
-               "y" : 81,
-               "name" : "#029"
-            },
-            {
-               "drilldown" : "030",
-               "y" : 119,
-               "name" : "#030"
-            },
-            {
-               "y" : 91,
-               "name" : "#031",
-               "drilldown" : "031"
-            },
-            {
-               "y" : 96,
-               "name" : "#032",
-               "drilldown" : "032"
-            },
-            {
-               "drilldown" : "033",
-               "y" : 112,
-               "name" : "#033"
-            },
-            {
-               "drilldown" : "034",
-               "name" : "#034",
-               "y" : 66
-            },
-            {
-               "drilldown" : "035",
-               "name" : "#035",
-               "y" : 66
-            },
-            {
-               "y" : 68,
-               "name" : "#036",
-               "drilldown" : "036"
-            },
-            {
-               "drilldown" : "037",
-               "y" : 67,
-               "name" : "#037"
-            },
-            {
-               "y" : 68,
-               "name" : "#038",
-               "drilldown" : "038"
-            },
-            {
-               "drilldown" : "039",
-               "y" : 62,
-               "name" : "#039"
-            },
-            {
-               "drilldown" : "040",
-               "name" : "#040",
-               "y" : 73
-            },
-            {
-               "drilldown" : "041",
-               "y" : 76,
-               "name" : "#041"
-            },
-            {
-               "drilldown" : "042",
-               "name" : "#042",
-               "y" : 92
-            },
-            {
-               "name" : "#043",
-               "y" : 68,
-               "drilldown" : "043"
-            },
-            {
-               "drilldown" : "044",
-               "y" : 85,
-               "name" : "#044"
-            },
-            {
-               "y" : 96,
-               "name" : "#045",
-               "drilldown" : "045"
-            },
-            {
-               "drilldown" : "046",
-               "name" : "#046",
-               "y" : 87
-            },
-            {
-               "drilldown" : "047",
-               "y" : 84,
-               "name" : "#047"
-            },
-            {
-               "y" : 108,
-               "name" : "#048",
-               "drilldown" : "048"
-            },
-            {
-               "drilldown" : "049",
-               "y" : 89,
-               "name" : "#049"
-            },
-            {
-               "y" : 98,
-               "name" : "#050",
-               "drilldown" : "050"
-            },
-            {
-               "drilldown" : "051",
-               "name" : "#051",
-               "y" : 89
-            },
-            {
-               "drilldown" : "052",
-               "y" : 91,
-               "name" : "#052"
-            },
-            {
-               "y" : 101,
-               "name" : "#053",
-               "drilldown" : "053"
-            },
-            {
-               "drilldown" : "054",
-               "y" : 103,
-               "name" : "#054"
-            },
-            {
-               "name" : "#055",
-               "y" : 88,
-               "drilldown" : "055"
-            },
-            {
-               "drilldown" : "056",
-               "name" : "#056",
-               "y" : 95
-            },
-            {
-               "name" : "#057",
-               "y" : 80,
-               "drilldown" : "057"
-            },
-            {
-               "drilldown" : "058",
-               "name" : "#058",
-               "y" : 69
-            },
-            {
-               "y" : 89,
-               "name" : "#059",
-               "drilldown" : "059"
-            },
-            {
-               "y" : 85,
-               "name" : "#060",
-               "drilldown" : "060"
-            },
-            {
-               "name" : "#061",
-               "y" : 81,
-               "drilldown" : "061"
-            },
-            {
-               "drilldown" : "062",
-               "name" : "#062",
-               "y" : 58
-            },
-            {
-               "drilldown" : "063",
-               "y" : 89,
-               "name" : "#063"
-            },
-            {
-               "y" : 80,
-               "name" : "#064",
-               "drilldown" : "064"
-            },
-            {
-               "y" : 73,
-               "name" : "#065",
-               "drilldown" : "065"
-            },
-            {
-               "drilldown" : "066",
-               "name" : "#066",
-               "y" : 84
-            },
-            {
-               "y" : 90,
-               "name" : "#067",
-               "drilldown" : "067"
-            },
-            {
-               "drilldown" : "068",
-               "y" : 75,
-               "name" : "#068"
-            },
-            {
-               "drilldown" : "069",
-               "name" : "#069",
-               "y" : 83
-            },
-            {
-               "name" : "#070",
-               "y" : 93,
-               "drilldown" : "070"
-            },
-            {
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