- Added solutions by Laurent Rosenfeld.

19 files changed, 2906 insertions, 2873 deletions

diff --git a/challenge-277/laurent-rosenfeld/blog1.txt b/challenge-277/laurent-rosenfeld/blog1.txt
new file mode 100644
index 0000000000..e6ef29c435
--- /dev/null
+++ b/challenge-277/laurent-rosenfeld/blog1.txt
@@ -0,0 +1 @@
+https://blogs.perl.org/users/laurent_r/2024/07/perl-weekly-challenge-277-strong-pair.html
diff --git a/challenge-277/laurent-rosenfeld/perl/ch-2.pl b/challenge-277/laurent-rosenfeld/perl/ch-2.pl
new file mode 100644
index 0000000000..c1c4ba0a08
--- /dev/null
+++ b/challenge-277/laurent-rosenfeld/perl/ch-2.pl
@@ -0,0 +1,19 @@
+sub strong_pairs {
+    my %input = map { $_ => 1 } @_; # remove duplicates
+    my @in = keys %input;
+    my $count = 0;
+    for my $i (0..$#in) {
+        for my $j ($i+1..$#in) {
+            my $min = $in[$i] < $in[$j] ? $i : $j;
+            $count++ if 0 < abs($in[$i] - $in[$j]) and
+                abs($in[$i] - $in[$j]) < $in[$min];
+        }
+    }
+    return $count;
+}
+
+my @tests = ([1, 2, 3, 4, 5], [5, 7, 1, 7]);
+for my $test (@tests) {
+    printf "%-10s => ", "@$test";
+    say strong_pairs @$test;
+}
diff --git a/challenge-277/laurent-rosenfeld/raku/ch-2.raku b/challenge-277/laurent-rosenfeld/raku/ch-2.raku
new file mode 100644
index 0000000000..a6dd77c9f1
--- /dev/null
+++ b/challenge-277/laurent-rosenfeld/raku/ch-2.raku
@@ -0,0 +1,13 @@
+sub strong-pairs (@in) {
+    my` $count = 0;
+    for @in.unique.combinations: 2 -> @pair {
+        $count++ if 0 < (@pair[0] - @pair[1]).abs < @pair.min;
+    }
+    return $count;
+}
+
+my @tests = (1, 2, 3, 4, 5), (5, 7, 1, 7);
+for @tests -> @test {
+    printf "%-10s => ", "@test[]";
+    say strong-pairs @test;
+}
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index 417dfb6737..fa085180cc 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,19 +1,7 @@
 {
-   "legend" : {
-      "enabled" : 0
-   },
-   "chart" : {
-      "type" : "column"
-   },
-   "yAxis" : {
-      "title" : {
-         "text" : "Total Solutions"
-      }
-   },
    "series" : [
       {
          "name" : "The Weekly Challenge - 277",
-         "colorByPoint" : 1,
          "data" : [
             {
                "drilldown" : "Alexander Karelas",
@@ -21,93 +9,99 @@
                "name" : "Alexander Karelas"
             },
             {
+               "name" : "Ali Moradi",
                "y" : 5,
-               "drilldown" : "Ali Moradi",
-               "name" : "Ali Moradi"
+               "drilldown" : "Ali Moradi"
             },
             {
-               "y" : 2,
                "drilldown" : "Dave Jacoby",
-               "name" : "Dave Jacoby"
+               "name" : "Dave Jacoby",
+               "y" : 2
             },
             {
-               "name" : "David Ferrone",
                "drilldown" : "David Ferrone",
+               "name" : "David Ferrone",
                "y" : 2
             },
             {
-               "name" : "E. Choroba",
+               "drilldown" : "E. Choroba",
                "y" : 2,
-               "drilldown" : "E. Choroba"
+               "name" : "E. Choroba"
             },
             {
                "drilldown" : "Feng Chang",
-               "y" : 2,
-               "name" : "Feng Chang"
+               "name" : "Feng Chang",
+               "y" : 2
             },
             {
                "name" : "Laurent Rosenfeld",
-               "y" : 3,
+               "y" : 6,
                "drilldown" : "Laurent Rosenfeld"
             },
             {
-               "y" : 2,
                "drilldown" : "Mariano Ortega",
+               "y" : 2,
                "name" : "Mariano Ortega"
             },
             {
+               "y" : 2,
                "name" : "Mark Anderson",
-               "drilldown" : "Mark Anderson",
-               "y" : 2
+               "drilldown" : "Mark Anderson"
             },
             {
+               "name" : "Matthew Neleigh",
                "y" : 2,
-               "drilldown" : "Matthew Neleigh",
-               "name" : "Matthew Neleigh"
+               "drilldown" : "Matthew Neleigh"
             },
             {
-               "drilldown" : "Niels van Dijke",
                "y" : 2,
-               "name" : "Niels van Dijke"
+               "name" : "Niels van Dijke",
+               "drilldown" : "Niels van Dijke"
             },
             {
                "y" : 5,
-               "drilldown" : "Packy Anderson",
-               "name" : "Packy Anderson"
+               "name" : "Packy Anderson",
+               "drilldown" : "Packy Anderson"
             },
             {
-               "name" : "Peter Campbell Smith",
                "drilldown" : "Peter Campbell Smith",
-               "y" : 3
+               "y" : 3,
+               "name" : "Peter Campbell Smith"
             },
             {
-               "name" : "Peter Meszaros",
                "drilldown" : "Peter Meszaros",
-               "y" : 2
+               "y" : 2,
+               "name" : "Peter Meszaros"
             },
             {
+               "drilldown" : "Reinier Maliepaard",
                "name" : "Reinier Maliepaard",
-               "y" : 3,
-               "drilldown" : "Reinier Maliepaard"
+               "y" : 3
             },
             {
-               "drilldown" : "Santiago Leyva",
                "y" : 2,
-               "name" : "Santiago Leyva"
+               "name" : "Santiago Leyva",
+               "drilldown" : "Santiago Leyva"
             },
             {
                "drilldown" : "Ulrich Rieke",
-               "y" : 4,
-               "name" : "Ulrich Rieke"
+               "name" : "Ulrich Rieke",
+               "y" : 4
             },
             {
+               "drilldown" : "W. Luis Mochan",
                "name" : "W. Luis Mochan",
-               "y" : 3,
-               "drilldown" : "W. Luis Mochan"
+               "y" : 3
             }
-         ]
+         ],
+         "colorByPoint" : 1
       }
    ],
+   "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/>"
+   },
    "plotOptions" : {
       "series" : {
          "dataLabels" : {
@@ -117,20 +111,39 @@
          "borderWidth" : 0
       }
    },
+   "legend" : {
+      "enabled" : 0
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "title" : {
+      "text" : "The Weekly Challenge - 277"
+   },
+   "subtitle" : {
+      "text" : "[Champions: 18] Last updated at 2024-07-10 21:23:21 GMT"
+   },
+   "yAxis" : {
+      "title" : {
+         "text" : "Total Solutions"
+      }
+   },
+   "chart" : {
+      "type" : "column"
+   },
    "drilldown" : {
       "series" : [
          {
+            "name" : "Alexander Karelas",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "name" : "Alexander Karelas",
             "id" : "Alexander Karelas"
          },
          {
-            "id" : "Ali Moradi",
             "name" : "Ali Moradi",
             "data" : [
                [
@@ -145,27 +158,28 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Ali Moradi"
          },
          {
-            "name" : "Dave Jacoby",
+            "id" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Dave Jacoby"
+            "name" : "Dave Jacoby"
          },
          {
             "id" : "David Ferrone",
+            "name" : "David Ferrone",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "David Ferrone"
+            ]
          },
          {
             "data" : [
@@ -188,21 +202,21 @@
             "id" : "Feng Chang"
          },
          {
-            "name" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl",
-                  1
+                  2
                ],
                [
                   "Raku",
-                  1
+                  2
                ],
                [
                   "Blog",
-                  1
+                  2
                ]
             ],
+            "name" : "Laurent Rosenfeld",
             "id" : "Laurent Rosenfeld"
          },
          {
@@ -227,23 +241,23 @@
          },
          {
             "id" : "Matthew Neleigh",
-            "name" : "Matthew Neleigh",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "Matthew Neleigh"
          },
          {
+            "id" : "Niels van Dijke",
+            "name" : "Niels van Dijke",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "Niels van Dijke",
-            "id" : "Niels van Dijke"
+            ]
          },
          {
             "name" : "Packy Anderson",
@@ -278,14 +292,14 @@
             "name" : "Peter Campbell Smith"
          },
          {
+            "id" : "Peter Meszaros",
+            "name" : "Peter Meszaros",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "name" : "Peter Meszaros",
-            "id" : "Peter Meszaros"
+            ]
          },
          {
             "id" : "Reinier Maliepaard",
@@ -313,6 +327,7 @@
          },
          {
             "id" : "Ulrich Rieke",
+            "name" : "Ulrich Rieke",
             "data" : [
                [
                   "Perl",
@@ -322,10 +337,10 @@
                   "Raku",
                   2
                ]
-            ],
-            "name" : "Ulrich Rieke"
+            ]
          },
          {
+            "name" : "W. Luis Mochan",
             "data" : [
                [
                   "Perl",
@@ -336,23 +351,8 @@
                   1
                ]
             ],
-            "name" : "W. Luis Mochan",
             "id" : "W. Luis Mochan"
          }
       ]
-   },
-   "xAxis" : {
-      "type" : "category"
-   },
-   "tooltip" : {
-      "headerFormat" : "<span style='font-size:11px'>{series.name}</span><br/>",
-      "pointFormat" : "<span style='color:{point.color}'>{point.name}</span>: <b>{point.y:f}</b><br/>",
-      "followPointer" : 1
-   },
-   "title" : {
-      "text" : "The Weekly Challenge - 277"
-   },
-   "subtitle" : {
-      "text" : "[Champions: 18] Last updated at 2024-07-10 21:03:35 GMT"
    }
 }
diff --git a/stats/pwc-language-breakdown-summary.json b/stats/pwc-language-breakdown-summary.json
index 8881b40199..712c70d9a0 100644
--- a/stats/pwc-language-breakdown-summary.json
+++ b/stats/pwc-language-breakdown-summary.json
@@ -1,63 +1,63 @@
 {
+   "chart" : {
+      "type" : "column"
+   },
    "title" : {
       "text" : "The Weekly Challenge Contributions [2019 - 2024]"
    },
    "subtitle" : {
-      "text" : "Last updated at 2024-07-10 21:03:35 GMT"
+      "text" : "Last updated at 2024-07-10 21:23:21 GMT"
    },
-   "xAxis" : {
-      "labels" : {
-         "style" : {
-            "fontSize" : "13px",
-            "fontFamily" : "Verdana, sans-serif"
-         }
-      },
-      "type" : "category"
-   },
-   "tooltip" : {
-      "pointFormat" : "<b>{point.y:.0f}</b>"
-   },
-   "legend" : {
-      "enabled" : "false"
-   },
-   "chart" : {
-      "type" : "column"
+   "yAxis" : {
+      "min" : 0,
+      "title" : {
+         "text" : null
+      }
    },
    "series" : [
       {
-         "dataLabels" : {
-            "enabled" : "true",
-            "style" : {
-               "fontFamily" : "Verdana, sans-serif",
-               "fontSize" : "13px"
-            },
-            "y" : 10,
-            "color" : "#FFFFFF",
-            "rotation" : -90,
-            "align" : "right",
-            "format" : "{point.y:.0f}"
-         },
          "data" : [
             [
                "Blog",
-               5044
+               5045
             ],
             [
                "Perl",
-               14357
+               14358
             ],
             [
                "Raku",
-               8311
+               8312
             ]
          ],
-         "name" : "Contributions"
+         "name" : "Contributions",
+         "dataLabels" : {
+            "y" : 10,
+            "format" : "{point.y:.0f}",
+            "color" : "#FFFFFF",
+            "rotation" : -90,
+            "style" : {
+               "fontSize" : "13px",
+               "fontFamily" : "Verdana, sans-serif"
+            },
+            "align" : "right",
+            "enabled" : "true"
+         }
       }
    ],
-   "yAxis" : {
-      "title" : {
-         "text" : null
-      },
-      "min" : 0
+   "tooltip" : {
+      "pointFormat" : "<b>{point.y:.0f}</b>"
+   },
+   "legend" : {
+      "enabled" : "false"
+   },
+   "xAxis" : {
+      "type" : "category",
+      "labels" : {
+         "style" : {
+            "fontFamily" : "Verdana, sans-serif",
+            "fontSize" : "13px"
+         }
+      }
    }
 }
diff --git a/stats/pwc-language-breakdown.json b/stats/pwc-language-breakdown.json
index c9edc74c1e..f3d572f685 100644
--- a/stats/pwc-language-breakdown.json
+++ b/stats/pwc-language-breakdown.json
@@ -1,1415 +1,19 @@
 {
-   "legend" : {
-      "enabled" : "false"
-   },
-   "chart" : {
-      "type" : "column"
+   "subtitle" : {
+      "text" : "Click the columns to drilldown the language breakdown. Last updated at 2024-07-10 21:23:21 GMT"
    },
    "yAxis" : {
       "title" : {
          "text" : "Total Solutions"
       }
    },
-   "series" : [
-      {
-         "name" : "The Weekly Challenge Languages",
-         "colorByPoint" : "true",
-         "data" : [
-            {
-               "y" : 168,
-               "drilldown" : "001",
-               "name" : "#001"
-            },
-            {
-               "name" : "#002",
-               "y" : 133,
-               "drilldown" : "002"
-            },
-            {
-               "name" : "#003",
-               "y" : 91,
-               "drilldown" : "003"
-            },
-            {
-               "drilldown" : "004",
-               "y" : 106,
-               "name" : "#004"
-            },
-            {
-               "name" : "#005",
-               "drilldown" : "005",
-               "y" : 82
-            },
-            {
-               "name" : "#006",
-               "y" : 63,
-               "drilldown" : "006"
-            },
-            {
-               "drilldown" : "007",
-               "y" : 71,
-               "name" : "#007"
-            },
-            {
-               "y" : 84,
-               "drilldown" : "008",
-               "name" : "#008"
-            },
-            {
-               "name" : "#009",
-               "drilldown" : "009",
-               "y" : 82
-            },
-            {
-               "name" : "#010",
-               "drilldown" : "010",
-               "y" : 71
-            },
-            {
-               "drilldown" : "011",
-               "y" : 91,
-               "name" : "#011"
-            },
-            {
-               "drilldown" : "012",
-               "y" : 96,
-               "name" : "#012"
-            },
-            {
-               "name" : "#013",
-               "y" : 88,
-               "drilldown" : "013"
-            },
-            {
-               "drilldown" : "014",
-               "y" : 104,
-               "name" : "#014"
-            },
-            {
-               "y" : 103,
-               "drilldown" : "015",
-               "name" : "#015"
-            },
-            {
-               "name" : "#016",
-               "y" : 75,
-               "drilldown" : "016"
-            },
-            {
-               "name" : "#017",
-               "drilldown" : "017",
-               "y" : 87
-            },
-            {
-               "drilldown" : "018",
-               "y" : 84,
-               "name" : "#018"
-            },
-            {
-               "name" : "#019",
-               "drilldown" : "019",
-               "y" : 105
-            },
-            {
-               "name" : "#020",
-               "y" : 103,
-               "drilldown" : "020"
-            },
-            {
-               "name" : "#021",
-               "y" : 74,
-               "drilldown" : "021"
-            },
-            {
-               "name" : "#022",
-               "drilldown" : "022",
-               "y" : 72
-            },
-            {
-               "y" : 101,
-               "drilldown" : "023",
-               "name" : "#023"
-            },
-            {
-               "drilldown" : "024",
-               "y" : 77,
-               "name" : "#024"
-            },
-            {
-               "name" : "#025",
-               "drilldown" : "025",
-               "y" : 62
-            },
-            {
-               "name" : "#026",
-               "drilldown" : "026",
-               "y" : 76
-            },
-            {
-               "name" : "#027",
-               "drilldown" : "027",
-               "y" : 64
-            },
-            {
-               "drilldown" : "028",
-               "y" : 82,
-               "name" : "#028"
-            },
-            {
-               "drilldown" : "029",
-               "y" : 83,
-               "name" : "#029"
-            },
-            {
-               "drilldown" : "030",
-               "y" : 121,
-               "name" : "#030"
-            },
-            {
-               "name" : "#031",
-               "drilldown" : "031",
-               "y" : 93
-            },
-            {
-               "drilldown" : "032",
-               "y" : 98,
-               "name" : "#032"
-            },
-            {
-               "name" : "#033",
-               "drilldown" : "033",
-               "y" : 114
-            },
-            {
-               "name" : "#034",
-               "drilldown" : "034",
-               "y" : 70
-            },
-            {
-               "drilldown" : "035",
-               "y" : 68,
-               "name" : "#035"
-            },
-            {
-               "name" : "#036",
-               "drilldown" : "036",
-               "y" : 70
-            },
-            {
-               "y" : 70,
-               "drilldown" : "037",
-               "name" : "#037"
-            },
-            {
-               "drilldown" : "038",
-               "y" : 74,
-               "name" : "#038"
-            },
-            {
-               "name" : "#039",
-               "y" : 68,
-               "drilldown" : "039"
-            },
-            {
-               "name" : "#040",
-               "y" : 77,
-               "drilldown" : "040"
-            },
-            {
-               "drilldown" : "041",
-               "y" : 80,
-               "name" : "#041"
-            },
-            {
-               "y" : 98,
-               "drilldown" : "042",
-               "name" : "#042"
-            },
-            {
-               "name" : "#043",
-               "drilldown" : "043",
-               "y" : 72
-            },
-            {
-               "name" : "#044",
-               "y" : 90,
-               "drilldown" : "044"
-            },
-            {
-               "y" : 102,
-               "drilldown" : "045",
-               "name" : "#045"
-            },
-            {
-               "y" : 93,
-               "drilldown" : "046",
-               "name" : "#046"
-            },
-            {
-               "y" : 88,
-               "drilldown" : "047",
-               "name" : "#047"
-            },
-            {
-               "name" : "#048",
-               "y" : 112,
-               "drilldown" : "048"
-            },
-            {
-               "name" : "#049",
-               "y" : 93,
-               "drilldown" : "049"
-            },
-            {
-               "drilldown" : "050",
-               "y" : 104,
-               "name" : "#050"
-            },
-            {
-               "name" : "#051",
-               "y" : 95,
-               "drilldown" : "051"
-            },
-            {
-               "y" : 93,
-               "drilldown" : "052",
-               "name" : "#052"
-            },
-            {
-               "drilldown" : "053",
-               "y" : 105,
-               "name" : "#053"
-            },
-            {
-               "name" : "#054",
-               "y" : 107,
-               "drilldown" : "054"
-            },
-            {
-               "name" : "#055",
-               "drilldown" : "055",
-               "y" : 92
-            },
-            {
-               "drilldown" : "056",
-               "y" : 104,
-               "name" : "#056"
-            },
-            {
-               "drilldown" : "057",
-               "y" : 86,
-               "name" : "#057"
-            },
-            {
-               "y" : 71,
-               "drilldown" : "058",
-               "name" : "#058"
-            },
-            {
-               "name" : "#059",
-               "drilldown" : "059",
-               "y" : 93
-            },
-            {
-               "drilldown" : "060",
-               "y" : 89,
-               "name" : "#060"
-            },
-            {
-               "y" : 85,
-               "drilldown" : "061",
-               "name" : "#061"
-            },
-            {
-               "drilldown" : "062",
-               "y" : 62,
-               "name" : "#062"
-            },
-            {
-               "name" : "#063",
-               "y" : 93,
-               "drilldown" : "063"
-            },
-            {
-               "drilldown" : "064",
-               "y" : 84,
-               "name" : "#064"
-            },
-            {
-               "drilldown" : "065",
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