- Added solution by Robert DiCicco.

15 files changed, 1496 insertions, 1434 deletions

diff --git a/challenge-137/robert-dicicco/perl/ch-1.pl b/challenge-137/robert-dicicco/perl/ch-1.pl
new file mode 100644
index 0000000000..4c48577315
--- /dev/null
+++ b/challenge-137/robert-dicicco/perl/ch-1.pl
@@ -0,0 +1,47 @@
+#!/usr/bin/env perl
+
+use strict;
+use warnings;
+use 5.30.0;
+
+use Date::Calc qw (leap_year Day_of_Week);
+
+# Author: Robert DiCicco
+# Date: 01-NOV-2021
+# Challenge 137
+
+# ISO-8601
+# An ISO calendar year is long if and only if the corresponding Gregorian
+# year begins on a Thursday when it is a common year or begins either on a
+# Wednesday or a Thursday when it is a leap year.
+
+# An ISO calendar year is long if and only if the corresponding Gregorian
+# year either begins or ends (or both) on a Thursday.
+
+my @years = (1900..2100);
+my @output_arr = ();
+
+foreach (@years){
+    my $leap_flag = 0;
+    if (leap_year($_)) {
+        $leap_flag = 1;
+    }
+
+    my $sdow = Day_of_Week($_, 1, 1);  # Jan. 1st  dow for selected year
+    my $ldow = Day_of_Week($_,12,31);  # Dec. 31st dow for selected year
+
+    if ($leap_flag){    # if this ia a leap year
+        if (($sdow == 3) || ($ldow == 5)){  # and the start dow is Wed., or last dow is Fri.
+            push(@output_arr, $_);  # then add to the output array
+        }
+    }
+    else { # not a leap year
+        if (($sdow == 4) || ($ldow == 4)){  # and the start dow is Thur., or last dow is Thur.
+            push(@output_arr, $_);  # then add to the output array
+        }
+    }
+}
+
+print("\n");
+print("Find all the years between 1900 and 2100 which is a Long Year.\n");
+print("Output:\n@output_arr\n");
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index e4b122c712..9445ba9121 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,23 +1,123 @@
 {
-   "legend" : {
-      "enabled" : 0
+   "series" : [
+      {
+         "name" : "The Weekly Challenge - 137",
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "y" : 1,
+               "name" : "Andrew Shitov",
+               "drilldown" : "Andrew Shitov"
+            },
+            {
+               "drilldown" : "Bob Lied",
+               "name" : "Bob Lied",
+               "y" : 2
+            },
+            {
+               "name" : "Flavio Poletti",
+               "drilldown" : "Flavio Poletti",
+               "y" : 6
+            },
+            {
+               "drilldown" : "James Smith",
+               "name" : "James Smith",
+               "y" : 3
+            },
+            {
+               "y" : 6,
+               "name" : "Luca Ferrari",
+               "drilldown" : "Luca Ferrari"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson"
+            },
+            {
+               "drilldown" : "Matthew Neleigh",
+               "name" : "Matthew Neleigh",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "name" : "Niels van Dijke",
+               "drilldown" : "Niels van Dijke"
+            },
+            {
+               "y" : 2,
+               "name" : "Paulo Custodio",
+               "drilldown" : "Paulo Custodio"
+            },
+            {
+               "name" : "Robert DiCicco",
+               "drilldown" : "Robert DiCicco",
+               "y" : 1
+            },
+            {
+               "name" : "Roger Bell_West",
+               "drilldown" : "Roger Bell_West",
+               "y" : 4
+            },
+            {
+               "y" : 3,
+               "name" : "Simon Green",
+               "drilldown" : "Simon Green"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Steven Wilson",
+               "name" : "Steven Wilson"
+            },
+            {
+               "name" : "W. Luis Mochan",
+               "drilldown" : "W. Luis Mochan",
+               "y" : 3
+            }
+         ]
+      }
+   ],
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
+         "borderWidth" : 0
+      }
    },
-   "chart" : {
-      "type" : "column"
+   "tooltip" : {
+      "followPointer" : 1,
+      "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/>"
    },
    "xAxis" : {
       "type" : "category"
    },
+   "title" : {
+      "text" : "The Weekly Challenge - 137"
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "legend" : {
+      "enabled" : 0
+   },
    "drilldown" : {
       "series" : [
          {
-            "name" : "Andrew Shitov",
             "data" : [
                [
                   "Raku",
                   1
                ]
             ],
+            "name" : "Andrew Shitov",
             "id" : "Andrew Shitov"
          },
          {
@@ -49,7 +149,6 @@
             ]
          },
          {
-            "id" : "James Smith",
             "data" : [
                [
                   "Perl",
@@ -60,9 +159,11 @@
                   1
                ]
             ],
+            "id" : "James Smith",
             "name" : "James Smith"
          },
          {
+            "name" : "Luca Ferrari",
             "id" : "Luca Ferrari",
             "data" : [
                [
@@ -73,47 +174,56 @@
                   "Blog",
                   4
                ]
-            ],
-            "name" : "Luca Ferrari"
+            ]
          },
          {
+            "id" : "Mark Anderson",
             "name" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "id" : "Mark Anderson"
+            ]
          },
          {
+            "name" : "Matthew Neleigh",
             "id" : "Matthew Neleigh",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "Matthew Neleigh"
+            ]
          },
          {
-            "name" : "Niels van Dijke",
-            "id" : "Niels van Dijke",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "Niels van Dijke",
+            "id" : "Niels van Dijke"
          },
          {
-            "name" : "Paulo Custodio",
-            "id" : "Paulo Custodio",
             "data" : [
                [
                   "Perl",
                   2
                ]
+            ],
+            "id" : "Paulo Custodio",
+            "name" : "Paulo Custodio"
+         },
+         {
+            "id" : "Robert DiCicco",
+            "name" : "Robert DiCicco",
+            "data" : [
+               [
+                  "Perl",
+                  1
+               ]
             ]
          },
          {
@@ -131,8 +241,6 @@
             "name" : "Roger Bell_West"
          },
          {
-            "name" : "Simon Green",
-            "id" : "Simon Green",
             "data" : [
                [
                   "Perl",
@@ -142,17 +250,19 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Simon Green",
+            "name" : "Simon Green"
          },
          {
-            "id" : "Steven Wilson",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "Steven Wilson"
+            "name" : "Steven Wilson",
+            "id" : "Steven Wilson"
          },
          {
             "name" : "W. Luis Mochan",
@@ -170,102 +280,7 @@
          }
       ]
    },
-   "title" : {
-      "text" : "The Weekly Challenge - 137"
-   },
-   "series" : [
-      {
-         "data" : [
-            {
-               "name" : "Andrew Shitov",
-               "drilldown" : "Andrew Shitov",
-               "y" : 1
-            },
-            {
-               "name" : "Bob Lied",
-               "drilldown" : "Bob Lied",
-               "y" : 2
-            },
-            {
-               "name" : "Flavio Poletti",
-               "drilldown" : "Flavio Poletti",
-               "y" : 6
-            },
-            {
-               "drilldown" : "James Smith",
-               "name" : "James Smith",
-               "y" : 3
-            },
-            {
-               "y" : 6,
-               "name" : "Luca Ferrari",
-               "drilldown" : "Luca Ferrari"
-            },
-            {
-               "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson",
-               "y" : 2
-            },
-            {
-               "y" : 2,
-               "drilldown" : "Matthew Neleigh",
-               "name" : "Matthew Neleigh"
-            },
-            {
-               "y" : 2,
-               "name" : "Niels van Dijke",
-               "drilldown" : "Niels van Dijke"
-            },
-            {
-               "drilldown" : "Paulo Custodio",
-               "name" : "Paulo Custodio",
-               "y" : 2
-            },
-            {
-               "y" : 4,
-               "drilldown" : "Roger Bell_West",
-               "name" : "Roger Bell_West"
-            },
-            {
-               "drilldown" : "Simon Green",
-               "name" : "Simon Green",
-               "y" : 3
-            },
-            {
-               "y" : 2,
-               "drilldown" : "Steven Wilson",
-               "name" : "Steven Wilson"
-            },
-            {
-               "drilldown" : "W. Luis Mochan",
-               "name" : "W. Luis Mochan",
-               "y" : 3
-            }
-         ],
-         "colorByPoint" : 1,
-         "name" : "The Weekly Challenge - 137"
-      }
-   ],
    "subtitle" : {
-      "text" : "[Champions: 13] Last updated at 2021-11-03 07:04:36 GMT"
-   },
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         }
-      }
-   },
-   "tooltip" : {
-      "followPointer" : 1,
-      "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/>"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
+      "text" : "[Champions: 14] Last updated at 2021-11-03 07:44:57 GMT"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 8c4a7ca868..1c96d83d93 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,49 +1,22 @@
 {
-   "xAxis" : {
-      "type" : "category",
-      "labels" : {
-         "style" : {
-            "fontSize" : "13px",
-            "fontFamily" : "Verdana, sans-serif"
-         }
-      }
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : null
-      },
-      "min" : 0
-   },
    "tooltip" : {
       "pointFormat" : "<b>{point.y:.0f}</b>"
    },
-   "title" : {
-      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
-   },
-   "subtitle" : {
-      "text" : "Last updated at 2021-11-03 07:04:36 GMT"
-   },
    "series" : [
       {
+         "name" : "Contributions",
          "dataLabels" : {
+            "align" : "right",
             "format" : "{point.y:.0f}",
-            "color" : "#FFFFFF",
             "style" : {
                "fontFamily" : "Verdana, sans-serif",
                "fontSize" : "13px"
             },
-            "rotation" : -90,
+            "y" : 10,
+            "color" : "#FFFFFF",
             "enabled" : "true",
-            "align" : "right",
-            "y" : 10
+            "rotation" : -90
          },
-         "name" : "Contributions",
          "data" : [
             [
                "Blog",
@@ -51,7 +24,7 @@
             ],
             [
                "Perl",
-               6551
+               6552
             ],
             [
                "Raku",
@@ -59,5 +32,32 @@
             ]
          ]
       }
-   ]
+   ],
+   "yAxis" : {
+      "title" : {
+         "text" : null
+      },
+      "min" : 0
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "xAxis" : {
+      "labels" : {
+         "style" : {
+            "fontFamily" : "Verdana, sans-serif",
+            "fontSize" : "13px"
+         }
+      },
+      "type" : "category"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge Contributions [2019 - 2021]"
+   },
+   "legend" : {
+      "enabled" : "false"
+   },
+   "subtitle" : {
+      "text" : "Last updated at 2021-11-03 07:44:57 GMT"
+   }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 6e348d1843..4e18ae29db 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,18 +1,9 @@
 {
-   "legend" : {
-      "enabled" : "false"
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "xAxis" : {
-      "type" : "category"
-   },
    "drilldown" : {
       "series" : [
          {
-            "name" : "001",
             "id" : "001",
+            "name" : "001",
             "data" : [
                [
                   "Perl",
@@ -29,6 +20,7 @@
             ]
          },
          {
+            "id" : "002",
             "name" : "002",
             "data" : [
                [
@@ -43,8 +35,7 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "002"
+            ]
          },
          {
             "data" : [
@@ -61,10 +52,12 @@
                   9
                ]
             ],
-            "id" : "003",
-            "name" : "003"
+            "name" : "003",
+            "id" : "003"
          },
          {
+            "name" : "004",
+            "id" : "004",
             "data" : [
                [
                   "Perl",
@@ -78,12 +71,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "004",
-            "name" : "004"
+            ]
          },
          {
-            "id" : "005",
             "data" : [
                [
                   "Perl",
@@ -98,10 +88,12 @@
                   12
                ]
             ],
+            "id" : "005",
             "name" : "005"
          },
          {
             "id" : "006",
+            "name" : "006",
             "data" : [
                [
                   "Perl",
@@ -115,11 +107,9 @@
                   "Blog",
                   7
                ]
-            ],
-            "name" : "006"
+            ]
          },
          {
-            "id" : "007",
             "data" : [
                [
                   "Perl",
@@ -134,11 +124,12 @@
                   10
                ]
             ],
+            "id" : "007",
             "name" : "007"
          },
          {
-            "name" : "008",
             "id" : "008",
+            "name" : "008",
             "data" : [
                [
                   "Perl",
@@ -155,7 +146,6 @@
             ]
          },
          {
-            "name" : "009",
             "data" : [
                [
                   "Perl",
@@ -170,11 +160,10 @@
                   13
                ]
             ],
-            "id" : "009"
+            "id" : "009",
+            "name" : "009"
          },
          {
-            "name" : "010",
-            "id" : "010",
             "data" : [
                [
                   "Perl",
@@ -188,9 +177,13 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "id" : "010",
+            "name" : "010"
          },
          {
+            "id" : "011",
+            "name" : "011",
             "data" : [
                [
                   "Perl",
@@ -204,13 +197,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "011",
-            "name" : "011"
+            ]
          },
          {
-            "name" : "012",
-            "id" : "012",
             "data" : [
                [
                   "Perl",
@@ -224,11 +213,11 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "012",
+            "id" : "012"
          },
          {
-            "name" : "013",
-            "id" : "013",
             "data" : [
                [
                   "Perl",
@@ -242,7 +231,9 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "name" : "013",
+            "id" : "013"
          },
          {
             "data" : [
@@ -259,12 +250,10 @@
                   15
                ]
             ],
-            "id" : "014",
-            "name" : "014"
+            "name" : "014",
+            "id" : "014"
          },
          {
-            "name" : "015",
-            "id" : "015",
             "data" : [
                [
                   "Perl",
@@ -278,10 +267,13 @@
                   "Blog",
                   15
                ]
-            ]
+            ],
+            "id" : "015",
+            "name" : "015"
          },
          {
             "id" : "016",
+            "name" : "016",
             "data" : [
                [
                   "Perl",
@@ -295,12 +287,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "016"
+            ]
          },
          {
-            "name" : "017",
-            "id" : "017",
             "data" : [
                [
                   "Perl",
@@ -314,7 +303,9 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "017",
+            "name" : "017"
          },
          {
             "name" : "018",
@@ -349,11 +340,10 @@
                   13
                ]
             ],
-            "id" : "019",
-            "name" : "019"
+            "name" : "019",
+            "id" : "019"
          },
          {
-            "id" : "020",
             "data" : [
                [
                   "Perl",
@@ -368,11 +358,12 @@
                   13
                ]
             ],
-            "name" : "020"
+            "name" : "020",
+            "id" : "020"
          },
          {
-            "name" : "021",
             "id" : "021",
+            "name" : "021",
             "data" : [
                [
                   "Perl",
@@ -389,6 +380,7 @@
             ]
          },
          {
+            "id" : "022",
             "name" : "022",
             "data" : [
                [
@@ -403,10 +395,11 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "022"
+            ]
          },
          {
+            "name" : "023",
+            "id" : "023",
             "data" : [
                [
                   "Perl",
@@ -420,11 +413,10 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "023",
-            "name" : "023"
+            ]
          },
          {
+            "name" : "024",
             "id" : "024",
             "data" : [
                [
@@ -439,11 +431,9 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "024"
+            ]
          },
          {
-            "name" : "025",
             "data" : [
                [
                   "Perl",
@@ -458,10 +448,12 @@
                   12
                ]
             ],
+            "name" : "025",
             "id" : "025"
          },
          {
             "name" : "026",
+            "id" : "026",
             "data" : [
                [
                   "Perl",
@@ -475,10 +467,11 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "026"
+            ]
          },
          {
+            "id" : "027",
+            "name" : "027",
             "data" : [
                [
                   "Perl",
@@ -492,13 +485,9 @@
                   "Blog",
                   9
                ]
-            ],
-            "id" : "027",
-            "name" : "027"
+            ]
          },
          {
-            "name" : "028",
-            "id" : "028",
             "data" : [
                [
                   "Perl",
@@ -512,10 +501,13 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "id" : "028",
+            "name" : "028"
          },
          {
             "id" : "029",
+            "name" : "029",
             "data" : [
                [
                   "Perl",
@@ -529,12 +521,9 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "029"
+            ]
          },
          {
-            "name" : "030",
-            "id" : "030",
             "data" : [
                [
                   "Perl",
@@ -548,10 +537,13 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "030",
+            "id" : "030"
          },
          {
             "id" : "031",
+            "name" : "031",
             "data" : [
                [
                   "Perl",
@@ -565,10 +557,11 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "031"
+            ]
          },
          {
+            "name" : "032",
+            "id" : "032",
             "data" : [
                [
                   "Perl",
@@ -582,13 +575,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "032",
-            "name" : "032"
+            ]
          },
          {
-            "name" : "033",
-            "id" : "033",
             "data" : [
                [
                   "Perl",
@@ -602,9 +591,12 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "033",
+            "id" : "033"
          },
          {
+            "id" : "034",
             "name" : "034",
             "data" : [
                [
@@ -619,10 +611,11 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "034"
+            ]
          },
          {
+            "id" : "035",
+            "name" : "035",
             "data" : [
                [
                   "Perl",
@@ -636,12 +629,9 @@
                   "Blog",
                   9
                ]
-            ],
-            "id" : "035",
-            "name" : "035"
+            ]
          },
          {
-            "name" : "036",
             "data" : [
                [
                   "Perl",
@@ -656,7 +646,8 @@
                   11
                ]
             ],
-            "id" : "036"
+            "id" : "036",
+            "name" : "036"
          },
          {
             "name" : "037",
@@ -677,8 +668,6 @@
             ]
          },
          {
-            "name" : "038",
-            "id" : "038",
             "data" : [
                [
                   "Perl",
@@ -692,10 +681,11 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "038",
+            "name" : "038"
          },
          {
-            "id" : "039",
             "data" : [
                [
                   "Perl",
@@ -710,9 +700,11 @@
                   12
                ]
             ],
-            "name" : "039"
+            "name" : "039",
+            "id" : "039"
          },
          {
+            "name" : "040",
             "id" : "040",
             "data" : [
                [
@@ -727,11 +719,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "040"
+            ]
          },
          {
-            "name" : "041",
             "data" : [
                [
                   "Perl",
@@ -746,10 +736,12 @@
                   9
                ]
             ],
-            "id" : "041"
+            "id" : "041",
+            "name" : "041"
          },
          {
             "id" : "042",
+            "name" : "042",
             "data" : [
                [
                   "Perl",
@@ -763,10 +755,11 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "042"
+            ]
          },
          {
+            "name" : "043",
+            "id" : "043",
             "data" : [
                [
                   "Perl",
@@ -780,13 +773,9 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "043",
-            "name" : "043"
+            ]
          },
          {
-            "name" : "044",
-            "id" : "044",
             "data" : [
                [
                   "Perl",
@@ -800,10 +789,11 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "id" : "044",
+            "name" : "044"
          },
          {
-            "id" : "045",
             "data" : [
                [
                   "Perl",
@@ -818,10 +808,12 @@
                   11
                ]
             ],
+            "id" : "045",
             "name" : "045"
          },
          {
             "name" : "046",
+            "id" : "046",
             "data" : [
                [
                   "Perl",
@@ -835,12 +827,9 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "046"
+            ]
          },
          {
-            "name" : "047",
-            "id" : "047",
             "data" : [
                [
                   "Perl",
@@ -854,10 +843,13 @@
                   "Blog",
                   10
                ]
-            ]
+