- Added task 1 of week 111.

14 files changed, 1332 insertions, 1250 deletions

diff --git a/challenge-111/mohammad-anwar/perl/ch-1.pl b/challenge-111/mohammad-anwar/perl/ch-1.pl
new file mode 100644
index 0000000000..7de5e76fa6
--- /dev/null
+++ b/challenge-111/mohammad-anwar/perl/ch-1.pl
@@ -0,0 +1,67 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Math::Utils qw(floor);
+
+my $search = $ARGV[0];
+die "ERROR: Missing search key.\n" unless defined $search;
+
+my @matrix = ( [  1,  2,  3,  5,  7 ],
+               [  9, 11, 15, 19, 20 ],
+               [ 23, 24, 25, 29, 31 ],
+               [ 32, 33, 39, 40, 42 ],
+               [ 45, 47, 48, 49, 50 ], );
+
+my $found = 0;
+foreach my $row (@matrix) {
+    ($row->[0] > $search) and last;
+    $found = binary_search($row, $search);
+    $found and last;
+}
+print sprintf("%d %s.\n", $search, ($found)?("found"):("not found"));
+
+=head1
+
+Binary search algorithm as suggested by Wikipedia:
+
+https://en.wikipedia.org/wiki/Binary_search_algorithm
+
+    function binary_search(A, n, T) is
+        L := 0
+        R := n − 1
+
+        while L ≤ R do
+            m := floor((L + R) / 2)
+            if A[m] < T then
+                L := m + 1
+            else if A[m] > T then
+                R := m − 1
+            else:
+                return m
+
+        return unsuccessful
+
+=cut
+
+sub binary_search {
+    my ($row, $target) = @_;
+
+    my $l = 0;
+    my $r = @$row - 1;
+    while ($l <= $r) {
+        my $m = floor(( $l + $r ) / 2);
+        if ($row->[$m] < $target) {
+            $l = $m + 1;
+        }
+        elsif ($row->[$m] > $target) {
+            $r = $m - 1;
+        }
+        else {
+            return $m;
+        }
+    }
+
+    return 0;
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 769342aa32..9b78a405d3 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,9 +1,145 @@
 {
+   "title" : {
+      "text" : "Perl Weekly Challenge - 111"
+   },
+   "tooltip" : {
+      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
+      "followPointer" : 1,
+      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>"
+   },
    "legend" : {
       "enabled" : 0
    },
-   "title" : {
-      "text" : "Perl Weekly Challenge - 111"
+   "series" : [
+      {
+         "colorByPoint" : 1,
+         "data" : [
+            {
+               "y" : 3,
+               "drilldown" : "Aaron Smith",
+               "name" : "Aaron Smith"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Abigail",
+               "name" : "Abigail"
+            },
+            {
+               "name" : "Cheok-Yin Fung",
+               "drilldown" : "Cheok-Yin Fung",
+               "y" : 2
+            },
+            {
+               "name" : "Dave Jacoby",
+               "drilldown" : "Dave Jacoby",
+               "y" : 3
+            },
+            {
+               "name" : "E. Choroba",
+               "drilldown" : "E. Choroba",
+               "y" : 2
+            },
+            {
+               "name" : "Feng Chang",
+               "drilldown" : "Feng Chang",
+               "y" : 2
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Flavio Poletti",
+               "name" : "Flavio Poletti"
+            },
+            {
+               "drilldown" : "James Smith",
+               "y" : 3,
+               "name" : "James Smith"
+            },
+            {
+               "drilldown" : "Jorg Sommrey",
+               "y" : 2,
+               "name" : "Jorg Sommrey"
+            },
+            {
+               "name" : "Laurent Rosenfeld",
+               "y" : 5,
+               "drilldown" : "Laurent Rosenfeld"
+            },
+            {
+               "y" : 4,
+               "drilldown" : "Luca Ferrari",
+               "name" : "Luca Ferrari"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Mark Anderson",
+               "name" : "Mark Anderson"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Mohammad S Anwar",
+               "name" : "Mohammad S Anwar"
+            },
+            {
+               "name" : "Niels van Dijke",
+               "y" : 2,
+               "drilldown" : "Niels van Dijke"
+            },
+            {
+               "drilldown" : "Pete Houston",
+               "y" : 2,
+               "name" : "Pete Houston"
+            },
+            {
+               "name" : "Roger Bell_West",
+               "drilldown" : "Roger Bell_West",
+               "y" : 5
+            },
+            {
+               "name" : "Simon Proctor",
+               "drilldown" : "Simon Proctor",
+               "y" : 1
+            },
+            {
+               "drilldown" : "Stuart Little",
+               "y" : 4,
+               "name" : "Stuart Little"
+            },
+            {
+               "drilldown" : "Ulrich Rieke",
+               "y" : 4,
+               "name" : "Ulrich Rieke"
+            },
+            {
+               "y" : 3,
+               "drilldown" : "W. Luis Mochan",
+               "name" : "W. Luis Mochan"
+            }
+         ],
+         "name" : "Perl Weekly Challenge - 111"
+      }
+   ],
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
+         "borderWidth" : 0
+      }
+   },
+   "subtitle" : {
+      "text" : "[Champions: 20] Last updated at 2021-05-08 20:59:56 GMT"
+   },
+   "chart" : {
+      "type" : "column"
    },
    "drilldown" : {
       "series" : [
@@ -22,27 +158,28 @@
             ]
          },
          {
-            "name" : "Abigail",
+            "id" : "Abigail",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Abigail"
+            "name" : "Abigail"
          },
          {
             "id" : "Cheok-Yin Fung",
-            "name" : "Cheok-Yin Fung",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "Cheok-Yin Fung"
          },
          {
             "id" : "Dave Jacoby",
+            "name" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -52,30 +189,30 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "Dave Jacoby"
+            ]
          },
          {
+            "id" : "E. Choroba",
             "name" : "E. Choroba",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "id" : "E. Choroba"
+            ]
          },
          {
             "id" : "Feng Chang",
+            "name" : "Feng Chang",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ],
-            "name" : "Feng Chang"
+            ]
          },
          {
+            "id" : "Flavio Poletti",
             "name" : "Flavio Poletti",
             "data" : [
                [
@@ -86,11 +223,9 @@
                   "Blog",
                   2
                ]
-            ],
-            "id" : "Flavio Poletti"
+            ]
          },
          {
-            "name" : "James Smith",
             "data" : [
                [
                   "Perl",
@@ -101,19 +236,21 @@
                   1
                ]
             ],
+            "name" : "James Smith",
             "id" : "James Smith"
          },
          {
-            "id" : "Jorg Sommrey",
+            "name" : "Jorg Sommrey",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "Jorg Sommrey"
+            "id" : "Jorg Sommrey"
          },
          {
+            "name" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl",
@@ -128,7 +265,6 @@
                   1
                ]
             ],
-            "name" : "Laurent Rosenfeld",
             "id" : "Laurent Rosenfeld"
          },
          {
@@ -146,34 +282,44 @@
             "id" : "Luca Ferrari"
          },
          {
-            "id" : "Mark Anderson",
+            "name" : "Mark Anderson",
             "data" : [
                [
                   "Raku",
                   2
                ]
             ],
-            "name" : "Mark Anderson"
+            "id" : "Mark Anderson"
          },
          {
+            "id" : "Mohammad S Anwar",
             "data" : [
                [
                   "Perl",
-                  2
+                  1
                ]
             ],
+            "name" : "Mohammad S Anwar"
+         },
+         {
             "name" : "Niels van Dijke",
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ]
+            ],
             "id" : "Niels van Dijke"
          },
          {
-            "id" : "Pete Houston",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "Pete Houston"
+            "name" : "Pete Houston",
+            "id" : "Pete Houston"
          },
          {
             "data" : [
@@ -194,16 +340,17 @@
             "id" : "Roger Bell_West"
          },
          {
+            "id" : "Simon Proctor",
             "name" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   1
                ]
-            ],
-            "id" : "Simon Proctor"
+            ]
          },
          {
+            "id" : "Stuart Little",
             "data" : [
                [
                   "Perl",
@@ -214,12 +361,10 @@
                   2
                ]
             ],
-            "name" : "Stuart Little",
-            "id" : "Stuart Little"
+            "name" : "Stuart Little"
          },
          {
             "id" : "Ulrich Rieke",
-            "name" : "Ulrich Rieke",
             "data" : [
                [
                   "Perl",
@@ -229,9 +374,11 @@
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "name" : "Ulrich Rieke"
          },
          {
+            "name" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -242,140 +389,8 @@
                   1
                ]
             ],
-            "name" : "W. Luis Mochan",
             "id" : "W. Luis Mochan"
          }
       ]
-   },
-   "plotOptions" : {
-      "series" : {
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         },
-         "borderWidth" : 0
-      }
-   },
-   "subtitle" : {
-      "text" : "[Champions: 19] Last updated at 2021-05-08 20:17:32 GMT"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
-   "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/>"
-   },
-   "series" : [
-      {
-         "colorByPoint" : 1,
-         "name" : "Perl Weekly Challenge - 111",
-         "data" : [
-            {
-               "drilldown" : "Aaron Smith",
-               "name" : "Aaron Smith",
-               "y" : 3
-            },
-            {
-               "y" : 2,
-               "name" : "Abigail",
-               "drilldown" : "Abigail"
-            },
-            {
-               "drilldown" : "Cheok-Yin Fung",
-               "name" : "Cheok-Yin Fung",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Dave Jacoby",
-               "name" : "Dave Jacoby",
-               "y" : 3
-            },
-            {
-               "name" : "E. Choroba",
-               "y" : 2,
-               "drilldown" : "E. Choroba"
-            },
-            {
-               "drilldown" : "Feng Chang",
-               "y" : 2,
-               "name" : "Feng Chang"
-            },
-            {
-               "drilldown" : "Flavio Poletti",
-               "y" : 4,
-               "name" : "Flavio Poletti"
-            },
-            {
-               "drilldown" : "James Smith",
-               "y" : 3,
-               "name" : "James Smith"
-            },
-            {
-               "y" : 2,
-               "name" : "Jorg Sommrey",
-               "drilldown" : "Jorg Sommrey"
-            },
-            {
-               "drilldown" : "Laurent Rosenfeld",
-               "name" : "Laurent Rosenfeld",
-               "y" : 5
-            },
-            {
-               "drilldown" : "Luca Ferrari",
-               "y" : 4,
-               "name" : "Luca Ferrari"
-            },
-            {
-               "drilldown" : "Mark Anderson",
-               "name" : "Mark Anderson",
-               "y" : 2
-            },
-            {
-               "drilldown" : "Niels van Dijke",
-               "y" : 2,
-               "name" : "Niels van Dijke"
-            },
-            {
-               "name" : "Pete Houston",
-               "y" : 2,
-               "drilldown" : "Pete Houston"
-            },
-            {
-               "y" : 5,
-               "name" : "Roger Bell_West",
-               "drilldown" : "Roger Bell_West"
-            },
-            {
-               "y" : 1,
-               "name" : "Simon Proctor",
-               "drilldown" : "Simon Proctor"
-            },
-            {
-               "drilldown" : "Stuart Little",
-               "name" : "Stuart Little",
-               "y" : 4
-            },
-            {
-               "drilldown" : "Ulrich Rieke",
-               "y" : 4,
-               "name" : "Ulrich Rieke"
-            },
-            {
-               "drilldown" : "W. Luis Mochan",
-               "y" : 3,
-               "name" : "W. Luis Mochan"
-            }
-         ]
-      }
-   ],
-   "xAxis" : {
-      "type" : "category"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 0db50c33cf..0a998f2423 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,40 +1,24 @@
 {
-   "legend" : {
-      "enabled" : "false"
-   },
-   "title" : {
-      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
-   },
-   "subtitle" : {
-      "text" : "Last updated at 2021-05-08 20:17:32 GMT"
-   },
    "yAxis" : {
-      "min" : 0,
       "title" : {
          "text" : null
-      }
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "chart" : {
-      "type" : "column"
+      },
+      "min" : 0
    },
    "series" : [
       {
          "dataLabels" : {
-            "enabled" : "true",
+            "color" : "#FFFFFF",
+            "y" : 10,
             "rotation" : -90,
-            "align" : "right",
-            "format" : "{point.y:.0f}",
             "style" : {
                "fontSize" : "13px",
                "fontFamily" : "Verdana, sans-serif"
             },
-            "y" : 10,
-            "color" : "#FFFFFF"
+            "enabled" : "true",
+            "align" : "right",
+            "format" : "{point.y:.0f}"
          },
-         "name" : "Contributions",
          "data" : [
             [
                "Blog",
@@ -42,22 +26,38 @@
             ],
             [
                "Perl",
-               5242
+               5243
             ],
             [
                "Raku",
                3333
             ]
-         ]
+         ],
+         "name" : "Contributions"
       }
    ],
+   "title" : {
+      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
+   },
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "legend" : {
+      "enabled" : "false"
+   },
+   "chart" : {
+      "type" : "column"
+   },
    "xAxis" : {
+      "type" : "category",
       "labels" : {
          "style" : {
             "fontFamily" : "Verdana, sans-serif",
             "fontSize" : "13px"
          }
-      },
-      "type" : "category"
+      }
+   },
+   "subtitle" : {
+      "text" : "Last updated at 2021-05-08 20:59:56 GMT"
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 8e4a1a9080..6ad4bbc902 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,11 +1,24 @@
 {
-   "legend" : {
-      "enabled" : "false"
+   "subtitle" : {
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2021-05-08 20:59:56 GMT"
+   },
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         },
+         "borderWidth" : 0
+      }
+   },
+   "xAxis" : {
+      "type" : "category"
    },
    "drilldown" : {
       "series" : [
          {
             "id" : "001",
+            "name" : "001",
             "data" : [
                [
                   "Perl",
@@ -19,12 +32,9 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "001"
+            ]
          },
          {
-            "id" : "002",
-            "name" : "002",
             "data" : [
                [
                   "Perl",
@@ -38,10 +48,11 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "002",
+            "id" : "002"
          },
          {
-            "id" : "003",
             "data" : [
                [
                   "Perl",
@@ -56,9 +67,11 @@
                   9
                ]
             ],
-            "name" : "003"
+            "name" : "003",
+            "id" : "003"
          },
          {
+            "id" : "004",
             "data" : [
                [
                   "Perl",
@@ -73,11 +86,10 @@
                   10
                ]
             ],
-            "name" : "004",
-            "id" : "004"
+            "name" : "004"
          },
          {
-            "name" : "005",
+            "id" : "005",
             "data" : [
                [
                   "Perl",
@@ -92,11 +104,9 @@
                   12
                ]
             ],
-            "id" : "005"
+            "name" : "005"
          },
          {
-            "id" : "006",
-            "name" : "006",
             "data" : [
                [
                   "Perl",
@@ -110,10 +120,11 @@
                   "Blog",
                   7
                ]
-            ]
+            ],
+            "name" : "006",
+            "id" : "006"
          },
          {
-            "id" : "007",
             "name" : "007",
             "data" : [
                [
@@ -128,10 +139,11 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "id" : "007"
          },
          {
-            "id" : "008",
+            "name" : "008",
             "data" : [
                [
                   "Perl",
@@ -146,7 +158,7 @@
                   12
                ]
             ],
-            "name" : "008"
+            "id" : "008"
          },
          {
             "name" : "009",
@@ -168,7 +180,6 @@
          },
          {
             "id" : "010",
-            "name" : "010",
             "data" : [
                [
                   "Perl",
@@ -182,11 +193,11 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "010"
          },
          {
             "id" : "011",
-            "name" : "011",
             "data" : [
                [
                   "Perl",
@@ -200,9 +211,12 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "011"
          },
          {
+            "id" : "012",
+            "name" : "012",
             "data" : [
                [
                   "Perl",
@@ -216,11 +230,10 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "012",
-            "id" : "012"
+            ]
          },
          {
+            "name" : "013",
             "data" : [
                [
                   "Perl",
@@ -235,11 +248,10 @@
                   13
                ]
             ],
-            "name" : "013",
             "id" : "013"
          },
          {
-            "id" : "014",
+            "name" : "014",
             "data" : [
                [
                   "Perl",
@@ -254,7 +266,7 @@
                   15
                ]
             ],
-            "name" : "014"
+            "id" : "014"
          },
          {
             "data" : [
@@ -311,7 +323,7 @@
             "id" : "017"
          },
          {
-            "id" : "018",
+            "name" : "018",
             "data" : [
                [
                   "Perl",
@@ -326,7 +338,7 @@
                   14
                ]
             ],
-            "name" : "018"
+            "id" : "018"
          },
          {
             "id" : "019",
@@ -347,7 +359,6 @@
             ]
          },
          {
-            "id" : "020",
             "name" : "020",
             "data" : [
                [
@@ -362,10 +373,10 @@
                   "Blog",
                   13
                ]
-            ]
+            ],
+            "id" : "020"
          },
          {
-            "name" : "021",
             "data" : [
                [
                   "Perl",
@@ -380,10 +391,10 @@
                   10
                ]
             ],
+            "name" : "021",
             "id" : "021"
          },
          {
-            "id" : "022",
             "data" : [
                [
                   "Perl",
@@ -398,10 +409,11 @@
                   10
                ]
             ],
-            "name" : "022"
+            "name" : "022",
+            "id" : "022"
          },
          {
-            "id" : "023",
+            "name" : "023",
             "data" : [
                [
                   "Perl",
@@ -416,10 +428,10 @@
                   12
                ]
             ],
-            "name" : "023"
+            "id" : "023"
          },
          {
-            "name" : "024",
+            "id" : "024",
             "data" : [
                [
                   "Perl",
@@ -434,10 +446,9 @@
                   11
                ]
             ],
-            "id" : "024"
+            "name" : "024"
          },
          {
-            "id" : "025",
             "name" : "025",
             "data" : [
                [
@@ -452,7 +463,8 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "id" : "025"
          },
          {
             "id" : "026",
@@ -473,8 +485,6 @@
             ]
          },
          {
-            "id" : "027",
-            "name" : "027",
             "data" : [
                [
                   "Perl",
@@ -488,10 +498,12 @@
                   "Blog",
                   9
                ]
-            ]
+            ],
+            "name" : "027",
+            "id" : "027"
          },
          {
-            "id" : "028",
+            "name" : "028",
             "data" : [
                [
                   "Perl",
@@ -506,9 +518,11 @@
                   9
                ]
             ],
-            "name" : "028"
+            "id" : "028"
          },
          {
+            "id" : "029",
+            "name" : "029",
             "data" : [
                [
                   "Perl",
@@ -522,11 +536,11 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "029",
-            "id" : "029"
+            ]
          },
          {
+            "id" : "030",
+            "name" : "030",
             "data" : [
                [
                   "Perl",
@@ -540,9 +554,7 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "030",
-            "id" : "030"
+            ]
          },
          {
             "name" : "031",
@@ -563,7 +575,6 @@
             "id" : "031"
          },
          {
-            "name" : "032",
             "data" : [
                [
                   "Perl",
@@ -578,11 +589,11 @@
                   10
                ]
             ],
+            "name" : "032",
             "id" : "032"
          },
          {
             "id" : "033",
-            "name" : "033",
             "data" : [
                [
                   "Perl",
@@ -596,11 +607,10 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "033"
          },
          {
-            "id" : "034",
-            "name" : "034",
             "data" : [
                [
                   "Perl",
@@ -614,10 +624,12 @@
                   "Blog",
                   11
                ]
-            ]
+            ],
+            "name" : "034",
+            "id" : "034"
          },
          {
-            "id" : "035",
+            "name" : "035",
             "data" : [
                [
                   "Perl",
@@ -632,10 +644,11 @@
                   9
                ]
             ],
-            "name" : "035"
+            "id" : "035"
          },
          {
             "id" : "036",
+            "name" : "036",
             "data" : [
                [
                   "Perl",
@@ -649,8 +662,7 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "036"
+            ]
          },
          {
             "id" : "037",
@@ -671,6 +683,7 @@
             ]
          },
          {
+            "id" : "038",
             "name" : "038",
             "data" : [
                [
@@ -685,10 +698,10 @@
                   "Blog",
                   12
                ]
-            ],
-            "id" : "038"
+            ]
          },
          {
+            "id" : "039",
             "data" : [
                [
                   "Perl",
@@ -703,10 +716,11 @@
                   12
                ]
             ],
-            "name" : "039",
-            "id" : "039"