- Added solution to Task #2 in #Perl.

11 files changed, 1126 insertions, 1105 deletions

diff --git a/challenge-049/mohammad-anwar/perl/ch-2.pl b/challenge-049/mohammad-anwar/perl/ch-2.pl
new file mode 100644
index 0000000000..8ecf3dfada
--- /dev/null
+++ b/challenge-049/mohammad-anwar/perl/ch-2.pl
@@ -0,0 +1,21 @@
+#!/usr/bin/perl
+
+use strict;
+use warnings;
+
+use Cache::LRU;
+
+my $cache = Cache::LRU->new(size => 3);
+
+$cache->set(1 => 3);
+$cache->set(2 => 5);
+$cache->set(3 => 7);
+
+print "get(2) => ", $cache->get(2), "\n";
+print "get(1) => ", $cache->get(1), "\n";
+
+print "get(4) => ", $cache->get(4)||-1, "\n";
+
+$cache->set(4 => 9);
+
+print "get(3) => ", $cache->get(3)||-1, "\n";
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index d3ac15c471..6a6bdfcf9f 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -4,74 +4,9 @@
          "text" : "Total Solutions"
       }
    },
-   "series" : [
-      {
-         "data" : [
-            {
-               "y" : 4,
-               "name" : "Luca Ferrari",
-               "drilldown" : "Luca Ferrari"
-            },
-            {
-               "name" : "Mohammad S Anwar",
-               "y" : 2,
-               "drilldown" : "Mohammad S Anwar"
-            },
-            {
-               "y" : 1,
-               "name" : "Peter Scott",
-               "drilldown" : "Peter Scott"
-            },
-            {
-               "y" : 4,
-               "name" : "Roger Bell West",
-               "drilldown" : "Roger Bell West"
-            },
-            {
-               "name" : "Simon Proctor",
-               "y" : 2,
-               "drilldown" : "Simon Proctor"
-            },
-            {
-               "y" : 2,
-               "name" : "Wanderdoc",
-               "drilldown" : "Wanderdoc"
-            }
-         ],
-         "name" : "Perl Weekly Challenge - 049",
-         "colorByPoint" : 1
-      }
-   ],
-   "chart" : {
-      "type" : "column"
-   },
-   "legend" : {
-      "enabled" : 0
-   },
-   "title" : {
-      "text" : "Perl Weekly Challenge - 049"
-   },
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "enabled" : 1,
-            "format" : "{point.y}"
-         }
-      }
-   },
-   "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/>"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 6] Last updated at 2020-02-24 18:40:10 GMT"
-   },
    "drilldown" : {
       "series" : [
          {
-            "id" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -82,34 +17,34 @@
                   2
                ]
             ],
-            "name" : "Luca Ferrari"
+            "name" : "Luca Ferrari",
+            "id" : "Luca Ferrari"
          },
          {
             "name" : "Mohammad S Anwar",
-            "id" : "Mohammad S Anwar",
             "data" : [
                [
                   "Perl",
-                  1
+                  2
                ],
                [
                   "Raku",
                   1
                ]
-            ]
+            ],
+            "id" : "Mohammad S Anwar"
          },
          {
-            "id" : "Peter Scott",
             "data" : [
                [
                   "Perl",
                   1
                ]
             ],
-            "name" : "Peter Scott"
+            "name" : "Peter Scott",
+            "id" : "Peter Scott"
          },
          {
-            "id" : "Roger Bell West",
             "data" : [
                [
                   "Perl",
@@ -120,7 +55,8 @@
                   2
                ]
             ],
-            "name" : "Roger Bell West"
+            "name" : "Roger Bell West",
+            "id" : "Roger Bell West"
          },
          {
             "name" : "Simon Proctor",
@@ -134,17 +70,81 @@
          },
          {
             "name" : "Wanderdoc",
-            "id" : "Wanderdoc",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Wanderdoc"
          }
       ]
    },
+   "chart" : {
+      "type" : "column"
+   },
+   "series" : [
+      {
+         "data" : [
+            {
+               "y" : 4,
+               "name" : "Luca Ferrari",
+               "drilldown" : "Luca Ferrari"
+            },
+            {
+               "y" : 3,
+               "drilldown" : "Mohammad S Anwar",
+               "name" : "Mohammad S Anwar"
+            },
+            {
+               "drilldown" : "Peter Scott",
+               "name" : "Peter Scott",
+               "y" : 1
+            },
+            {
+               "y" : 4,
+               "name" : "Roger Bell West",
+               "drilldown" : "Roger Bell West"
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Simon Proctor",
+               "name" : "Simon Proctor"
+            },
+            {
+               "name" : "Wanderdoc",
+               "drilldown" : "Wanderdoc",
+               "y" : 2
+            }
+         ],
+         "name" : "Perl Weekly Challenge - 049",
+         "colorByPoint" : 1
+      }
+   ],
+   "plotOptions" : {
+      "series" : {
+         "borderWidth" : 0,
+         "dataLabels" : {
+            "enabled" : 1,
+            "format" : "{point.y}"
+         }
+      }
+   },
+   "legend" : {
+      "enabled" : 0
+   },
+   "subtitle" : {
+      "text" : "[Champions: 6] Last updated at 2020-02-24 19:01:00 GMT"
+   },
    "xAxis" : {
       "type" : "category"
+   },
+   "title" : {
+      "text" : "Perl Weekly Challenge - 049"
+   },
+   "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/>"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index da8f5ea321..00b251d8db 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,38 +1,47 @@
 {
-   "subtitle" : {
-      "text" : "Last updated at 2020-02-24 18:40:10 GMT"
+   "yAxis" : {
+      "min" : 0,
+      "title" : {
+         "text" : null
+      }
+   },
+   "chart" : {
+      "type" : "column"
+   },
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "title" : {
+      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
    },
    "xAxis" : {
       "labels" : {
          "style" : {
-            "fontFamily" : "Verdana, sans-serif",
-            "fontSize" : "13px"
+            "fontSize" : "13px",
+            "fontFamily" : "Verdana, sans-serif"
          }
       },
       "type" : "category"
    },
-   "yAxis" : {
-      "min" : 0,
-      "title" : {
-         "text" : null
-      }
+   "subtitle" : {
+      "text" : "Last updated at 2020-02-24 19:01:00 GMT"
    },
-   "chart" : {
-      "type" : "column"
+   "legend" : {
+      "enabled" : "false"
    },
    "series" : [
       {
          "dataLabels" : {
             "align" : "right",
+            "rotation" : -90,
             "enabled" : "true",
             "style" : {
                "fontSize" : "13px",
                "fontFamily" : "Verdana, sans-serif"
             },
-            "format" : "{point.y:.0f}",
             "y" : 10,
-            "color" : "#FFFFFF",
-            "rotation" : -90
+            "format" : "{point.y:.0f}",
+            "color" : "#FFFFFF"
          },
          "name" : "Contributions",
          "data" : [
@@ -42,7 +51,7 @@
             ],
             [
                "Perl",
-               2007
+               2008
             ],
             [
                "Raku",
@@ -50,14 +59,5 @@
             ]
          ]
       }
-   ],
-   "title" : {
-      "text" : "Perl Weekly Challenge Contributions [2019 - 2020]"
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   }
+   ]
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index 022515c86d..68a55d9306 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,291 +1,14 @@
 {
-   "plotOptions" : {
-      "series" : {
-         "borderWidth" : 0,
-         "dataLabels" : {
-            "format" : "{point.y}",
-            "enabled" : 1
-         }
-      }
-   },
-   "tooltip" : {
-      "headerFormat" : "<span style=\"font-size:11px\"></span>",
-      "followPointer" : "true",
-      "pointFormat" : "<span style=\"color:{point.color}\">Challenge {point.name}</span>: <b>{point.y:f}</b><br/>"
-   },
-   "series" : [
-      {
-         "data" : [
-            {
-               "y" : 140,
-               "name" : "#001",
-               "drilldown" : "001"
-            },
-            {
-               "name" : "#002",
-               "y" : 109,
-               "drilldown" : "002"
-            },
-            {
-               "drilldown" : "003",
-               "name" : "#003",
-               "y" : 71
-            },
-            {
-               "drilldown" : "004",
-               "name" : "#004",
-               "y" : 91
-            },
-            {
-               "drilldown" : "005",
-               "y" : 71,
-               "name" : "#005"
-            },
-            {
-               "y" : 48,
-               "name" : "#006",
-               "drilldown" : "006"
-            },
-            {
-               "drilldown" : "007",
-               "name" : "#007",
-               "y" : 56
-            },
-            {
-               "y" : 70,
-               "name" : "#008",
-               "drilldown" : "008"
-            },
-            {
-               "drilldown" : "009",
-               "name" : "#009",
-               "y" : 68
-            },
-            {
-               "name" : "#010",
-               "y" : 60,
-               "drilldown" : "010"
-            },
-            {
-               "y" : 79,
-               "name" : "#011",
-               "drilldown" : "011"
-            },
-            {
-               "drilldown" : "012",
-               "y" : 83,
-               "name" : "#012"
-            },
-            {
-               "y" : 76,
-               "name" : "#013",
-               "drilldown" : "013"
-            },
-            {
-               "y" : 96,
-               "name" : "#014",
-               "drilldown" : "014"
-            },
-            {
-               "drilldown" : "015",
-               "y" : 93,
-               "name" : "#015"
-            },
-            {
-               "y" : 66,
-               "name" : "#016",
-               "drilldown" : "016"
-            },
-            {
-               "drilldown" : "017",
-               "name" : "#017",
-               "y" : 79
-            },
-            {
-               "name" : "#018",
-               "y" : 76,
-               "drilldown" : "018"
-            },
-            {
-               "name" : "#019",
-               "y" : 95,
-               "drilldown" : "019"
-            },
-            {
-               "y" : 95,
-               "name" : "#020",
-               "drilldown" : "020"
-            },
-            {
-               "drilldown" : "021",
-               "y" : 67,
-               "name" : "#021"
-            },
-            {
-               "drilldown" : "022",
-               "name" : "#022",
-               "y" : 63
-            },
-            {
-               "drilldown" : "023",
-               "y" : 91,
-               "name" : "#023"
-            },
-            {
-               "drilldown" : "024",
-               "name" : "#024",
-               "y" : 70
-            },
-            {
-               "y" : 55,
-               "name" : "#025",
-               "drilldown" : "025"
-            },
-            {
-               "drilldown" : "026",
-               "y" : 70,
-               "name" : "#026"
-            },
-            {
-               "y" : 58,
-               "name" : "#027",
-               "drilldown" : "027"
-            },
-            {
-               "drilldown" : "028",
-               "y" : 78,
-               "name" : "#028"
-            },
-            {
-               "drilldown" : "029",
-               "name" : "#029",
-               "y" : 77
-            },
-            {
-               "drilldown" : "030",
-               "name" : "#030",
-               "y" : 115
-            },
-            {
-               "drilldown" : "031",
-               "name" : "#031",
-               "y" : 87
-            },
-            {
-               "drilldown" : "032",
-               "name" : "#032",
-               "y" : 92
-            },
-            {
-               "drilldown" : "033",
-               "name" : "#033",
-               "y" : 108
-            },
-            {
-               "drilldown" : "034",
-               "y" : 60,
-               "name" : "#034"
-            },
-            {
-               "drilldown" : "035",
-               "name" : "#035",
-               "y" : 60
-            },
-            {
-               "name" : "#036",
-               "y" : 61,
-               "drilldown" : "036"
-            },
-            {
-               "drilldown" : "037",
-               "y" : 63,
-               "name" : "#037"
-            },
-            {
-               "name" : "#038",
-               "y" : 60,
-               "drilldown" : "038"
-            },
-            {
-               "drilldown" : "039",
-               "y" : 60,
-               "name" : "#039"
-            },
-            {
-               "name" : "#040",
-               "y" : 66,
-               "drilldown" : "040"
-            },
-            {
-               "drilldown" : "041",
-               "name" : "#041",
-               "y" : 69
-            },
-            {
-               "drilldown" : "042",
-               "name" : "#042",
-               "y" : 88
-            },
-            {
-               "y" : 65,
-               "name" : "#043",
-               "drilldown" : "043"
-            },
-            {
-               "drilldown" : "044",
-               "y" : 81,
-               "name" : "#044"
-            },
-            {
-               "y" : 94,
-               "name" : "#045",
-               "drilldown" : "045"
-            },
-            {
-               "name" : "#046",
-               "y" : 82,
-               "drilldown" : "046"
-            },
-            {
-               "y" : 80,
-               "name" : "#047",
-               "drilldown" : "047"
-            },
-            {
-               "y" : 101,
-               "name" : "#048",
-               "drilldown" : "048"
-            },
-            {
-               "drilldown" : "049",
-               "y" : 15,
-               "name" : "#049"
-            }
-         ],
-         "colorByPoint" : "true",
-         "name" : "Perl Weekly Challenge Languages"
-      }
-   ],
    "yAxis" : {
       "title" : {
          "text" : "Total Solutions"
       }
    },
-   "chart" : {
-      "type" : "column"
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
-   "title" : {
-      "text" : "Perl Weekly Challenge Language"
-   },
-   "xAxis" : {
-      "type" : "category"
-   },
    "drilldown" : {
       "series" : [
          {
+            "id" : "001",
+            "name" : "001",
             "data" : [
                [
                   "Perl",
@@ -299,13 +22,11 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "001",
-            "name" : "001"
+            ]
          },
          {
-            "name" : "002",
             "id" : "002",
+            "name" : "002",
             "data" : [
                [
                   "Perl",
@@ -323,6 +44,7 @@
          },
          {
             "id" : "003",
+            "name" : "003",
             "data" : [
                [
                   "Perl",
@@ -336,11 +58,11 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "003"
+            ]
          },
          {
             "id" : "004",
+            "name" : "004",
             "data" : [
                [
                   "Perl",
@@ -354,10 +76,10 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "004"
+            ]
          },
          {
+            "id" : "005",
             "data" : [
                [
                   "Perl",
@@ -372,10 +94,10 @@
                   12
                ]
             ],
-            "id" : "005",
             "name" : "005"
          },
          {
+            "id" : "006",
             "name" : "006",
             "data" : [
                [
@@ -390,11 +112,9 @@
                   "Blog",
                   7
                ]
-            ],
-            "id" : "006"
+            ]
          },
          {
-            "name" : "007",
             "id" : "007",
             "data" : [
                [
@@ -409,10 +129,12 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "007"
          },
          {
             "id" : "008",
+            "name" : "008",
             "data" : [
                [
                   "Perl",
@@ -426,11 +148,10 @@
                   "Blog",
                   12
                ]
-            ],
-            "name" : "008"
+            ]
          },
          {
-            "name" : "009",
+            "id" : "009",
             "data" : [
                [
                   "Perl",
@@ -445,9 +166,10 @@
                   13
                ]
             ],
-            "id" : "009"
+            "name" : "009"
          },
          {
+            "id" : "010",
             "name" : "010",
             "data" : [
                [
@@ -462,11 +184,11 @@
                   "Blog",
                   11
                ]
-            ],
-            "id" : "010"
+            ]
          },
          {
             "id" : "011",
+            "name" : "011",
             "data" : [
                [
                   "Perl",
@@ -480,10 +202,10 @@
                   "Blog",
                   10
                ]
-            ],
-            "name" : "011"
+            ]
          },
          {
+            "id" : "012",
             "data" : [
                [
                   "Perl",
@@ -498,11 +220,9 @@
                   11
                ]
             ],
-            "id" : "012",
             "name" : "012"
          },
          {
-            "name" : "013",
             "data" : [
                [
                   "Perl",
@@ -517,9 +237,11 @@
                   13
                ]
             ],
+            "name" : "013",
             "id" : "013"
          },
          {
+            "id" : "014",
             "data" : [
                [
                   "Perl",
@@ -534,12 +256,9 @@
                   15
                ]
             ],
-            "id" : "014",
             "name" : "014"
          },
          {
-            "name" : "015",
-            "id" : "015",
             "data" : [
                [
                   "Perl",
@@ -553,11 +272,11 @@
                   "Blog",
                   15
                ]
-            ]
+            ],
+            "name" : "015",
+            "id" : "015"
          },
          {
-            "name" : "016",
-            "id" : "016",
             "data" : [
                [
                   "Perl",
@@ -571,11 +290,11 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "name" : "016",
+            "id" : "016"
          },
          {
-            "name" : "017",
-            "id" : "017",
             "data" : [
                [
                   "Perl",
@@ -589,10 +308,12 @@
                   "Blog",
                   12
                ]
-            ]
+            ],
+            "name" : "017",
+            "id" : "017"
          },
          {
-            "id" : "018",
+            "name" : "018",
             "data" : [
                [
                   "Perl",
@@ -607,7 +328,7 @@
                   14
                ]
             ],
-            "name" : "018"
+            "id" : "018"
          },
          {
             "data" : [
@@ -624,10 +345,11 @@
                   13
                ]
             ],
-            "id" : "019",
-            "name" : "019"
+            "name" : "019",
+            "id" : "019"
          },
          {
+            "name" : "020",
             "data" : [
                [
                   "Perl",
@@ -642,10 +364,10 @@
                   13
                ]
             ],
-            "id" : "020",
-            "name" : "020"
+            "id" : "020"
          },
          {
+            "id" : "021",
             "name" : "021",
             "data" : [
                [
@@ -660,12 +382,11 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "021"
+            ]
          },
          {
-            "name" : "022",
             "id" : "022",
+            "name" : "022",
             "data" : [
                [
                   "Perl",
@@ -682,6 +403,7 @@
             ]
          },
          {
+            "name" : "023",
             "data" : [
                [
                   "Perl",
@@ -696,11 +418,9 @@
                   12
                ]
             ],
-            "id" : "023",
-            "name" : "023"
+            "id" : "023"
          },
          {
-            "name" : "024",
             "data" : [
                [
                   "Perl",
@@ -715,9 +435,11 @@
                   11
                ]
             ],
+            "name" : "024",
             "id" : "024"
          },
          {
+            "id" : "025",
             "data" : [
                [
                   "Perl",
@@ -732,10 +454,10 @@
                   12
                ]
             ],
-            "id" : "025",
             "name" : "025"
          },
          {
+            "id" : "026",
             "name" : "026",
             "data" : [
                [
@@ -750,10 +472,10 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "026"
+            ]
          },
          {
+            "id" : "027",
             "data" : [
                [
                   "Perl",
@@ -768,12 +490,11 @@
                   9
                ]
             ],
-            "id" : "027",
             "name" : "027"
          },
          {
-            "name" : "028",
             "id" : "028",
+            "name" : "028",
             "data" : [
                [
                   "Perl",
@@ -790,7 +511,7 @@
             ]
          },
          {
-            "id" : "029",
+            "name" : "029",
             "data" : [
                [
                   "Perl",
@@ -805,11 +526,10 @@
                   12
                ]
             ],
-            "name" : "029"
+            "id" : "029"
          },
          {
             "name" : "030",
-            "id" : "030",
             "data" : [
                [
                   "Perl",
@@ -823,9 +543,11 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "id" : "030"
          },
          {
+            "id" : "031",
             "name" : "031",
             "data" : [
                [
@@ -840,8 +562,7 @@
                   "Blog",
                   9
                ]
-            ],
-            "id" : "031"
+            ]
          },
          {
             "id" : "032",
@@ -862,6 +583,7 @@
             "name" : "032"
          },
          {
+            "id" : "033",
             "name" : "033",
             "data" : [
                [
@@ -876,11 +598,11 @@
                   "Blog",
                   10
                ]
-            ],
-            "id" : "033"
+            ]
          },
          {
             "id" : "034",
+            "name" : "034",
             "data" : [
                [
                   "Perl",
@@ -894,10 +616,10 @@
                   "Blog",
                   11
                ]
-            ],
-            "name" : "034"
+            ]
          },
          {
+            "id" : "035",
             "name" : "035",
             "data" : [
                [
@@ -912,11 +634,9 @@
                   "Blog",
                   9
                ]
-            ],
-            "id" : "035"
+            ]
          },
          {
-            "name" : "036",
             "id" : "036",
             "data" : [
                [
@@ -931,10 +651,12 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "036"
          },
          {
             "id" : "037",
+            "name" : "037",
             "data" : [
                [
                   "Perl",
@@ -948,10 +670,10 @@
                   "Blog",
                   9
                ]
-            ],
-            "name" : "037"
+            ]
          },
          {
+            "id" : "038",
             "data" : [
                [
                   "Perl",
@@ -966,11 +688,9 @@
                   11
                ]
             ],
-            "id" : "038",
             "name" : "038"
          },
          {
-            "name" : "039",
             "data" : [
                [
                   "Perl",
@@ -985,10 +705,11 @@
                   12
                ]
             ],
+            "name" : "039",
             "id" : "039"
          },
          {
-            "name" : "040",
+            "id" : "040",
             "data" : [
                [
                   "Perl",
@@ -1003,10 +724,11 @@
                   9
                ]
             ],
-            "id" : "040"
+            "name" : "040"
          },
          {
             "id" : "041",
+            "name" : "041",
             "data" : [
                [
                   "Perl",
@@ -1020,8 +742,7 @@
                   "Blog",
                   8
                ]
-            ],
-            "name" : "041"
+            ]
          },
          {
             "name" : "042",
@@ -1042,8 +763,6 @@
             "id" : "042"
          },
          {
-            "name" : "043",
-            "id" : "043",
             "data" : [
                [
                   "Perl",
@@ -1057,10 +776,12 @@
                   "Blog",
                   10
                ]
-            ]
+            ],
+            "name" : "043",
+            "id" : "043"
          },
          {
-            "name" : "044",
+            "id" : "044",
             "data" : [
                [
                   "Perl",
@@ -1075,11 +796,9 @@
                   10
                ]
             ],
-            "id" : "044"
+            "name" : "044"
          },
          {
-            "name" : "045",
-