- Added solutions by Colin Crain.

18 files changed, 2303 insertions, 1991 deletions

diff --git a/challenge-126/colin-crain/blog.txt b/challenge-126/colin-crain/blog.txt
new file mode 100644
index 0000000000..4c5248d531
--- /dev/null
+++ b/challenge-126/colin-crain/blog.txt
@@ -0,0 +1 @@
+https://colincrain.com/2021/08/22/i-sweep-for-no-one/
diff --git a/challenge-126/colin-crain/perl/ch-1.pl b/challenge-126/colin-crain/perl/ch-1.pl
new file mode 100644
index 0000000000..a5d9d62a2e
--- /dev/null
+++ b/challenge-126/colin-crain/perl/ch-1.pl
@@ -0,0 +1,44 @@
+#!/Users/colincrain/perl5/perlbrew/perls/perl-5.32.0/bin/perl

+#

+#       126-1-no-one-home.pl

+#

+#       Count Numbers

+#         Submitted by: Mohammad S Anwar

+#         You are given a positive integer $N.

+# 

+#         Write a script to print count of numbers from 1 to $N that don’t contain digit 1.

+# 

+#         Example

+#         Input: $N = 15

+#         Output: 8

+# 

+#             There are 8 numbers between 1 and 15 that don't contain digit 1.

+#             2, 3, 4, 5, 6, 7, 8, 9.

+# 

+#         Input: $N = 25

+#         Output: 13

+# 

+#             There are 13 numbers between 1 and 25 that don't contain digit 1.

+#             2, 3, 4, 5, 6, 7, 8, 9, 20, 22, 23, 24, 25.

+#

+#       © 2021 colin crain

+## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##

+

+

+

+use warnings;

+use strict;

+use utf8;

+use feature ":5.26";

+use feature qw(signatures);

+no warnings 'experimental::signatures';

+

+

+say scalar grep { ! /1/ } (2..shift @ARGV) ; 

+

+

+

+

+

+

+

diff --git a/challenge-126/colin-crain/perl/ch-2.pl b/challenge-126/colin-crain/perl/ch-2.pl
new file mode 100644
index 0000000000..0d4e426441
--- /dev/null
+++ b/challenge-126/colin-crain/perl/ch-2.pl
@@ -0,0 +1,169 @@
+#!/Users/colincrain/perl5/perlbrew/perls/perl-5.32.0/bin/perl

+#

+#       126-2-clean-sweep.pl

+#

+#       Minesweeper Game

+#         Submitted by: Cheok-Yin Fung

+# 

+#         You are given a rectangle with points marked with either x or *.

+#         Please consider the x as a land mine.

+# 

+#         Write a script to print a rectangle with numbers and x as in the

+#         Minesweeper game.

+# 

+#         A number in a square of the minesweeper game indicates the number

+#         of mines within the neighbouring squares (usually 8), also

+#         implies that there are no bombs on that square.

+# 

+#         Example

+#         Input:

+#             x * * * x * x x x x

+#             * * * * * * * * * x

+#             * * * * x * x * x *

+#             * * * x x * * * * *

+#             x * * * x * * * * x

+# 

+#         Output:

+#             x 1 0 1 x 2 x x x x

+#             1 1 0 2 2 4 3 5 5 x

+#             0 0 1 3 x 3 x 2 x 2

+#             1 1 1 x x 4 1 2 2 2

+#             x 1 1 3 x 2 0 0 1 x

+#

+#         theory:

+# 

+#             Well let me say I thought at first we'd been tasked with

+#             actually making a minesweeper game. I mean, on thinking it

+#             through it wouldn't be particularly difficult or anything;

+#             just take coordinate coded input and reprint the updated map.

+#             Or even provide terminal blanking tricks to make a proper

+#             ascii gui or sorts.

+# 

+#             Really the hard part would be thinking up and implementing

+#             all the fiddly details that go into an effort like that more

+#             than the code logic.

+# 

+#             I get the feeling someone will go the extra distance and do

+#             it; we may more likely get several versions to play arond

+#             with.

+# 

+#             Me, on the other hand I think I'll stick with the request as

+#             written. Perhaps when I'm done rooting through all the other

+#             rabbit holes permeating my life this week I'll have time to

+#             come back and fancy it up.

+# 

+#             Not likely though. I wouldn't wait up.

+# 

+#             So we have a request for the minesweeper *interface map*,

+#             rather than the *game*, which is an imprtant and neccessary

+#             subtask to breating the game, determining the information

+#             revealed to the user with every test made. The ultimate goal

+#             of the game is to reveal the entirely of this map, position

+#             by position, without testing a square with a mine in it.

+# 

+#             What we start with is the secret map of the minefield, which

+#             the player never directly sees. The player moves to a

+#             coordinate position, and the number of mines surrounding that

+#             square is revealed. By combining this information from a

+#             number of directions inferences can be made and the location,

+#             in theory, of the mines can be determined.

+# 

+#             WHat we need to construct is the map of the neighboring mine

+#             counts for each square that isn't a mine itself. If the

+#             player picks one of those squares the mine goes off, terrible

+#             things happen and the game is over, so we need never compute

+#             those positions.

+# 

+#         implementation:

+# 

+#             We could go about this two ways. We could either loop through

+#             the array, and for each cell scan the surrounding 8 cells,

+#             augmenting a count to each if the current cell contains a

+#             mine, or loop through each cell and search the surrounding

+#             area for active mines and count them up all at once that way.

+#             Either way involves a double iteator through the matrix,

+#             followed by another loop to encircle the candidate. Hoewever

+#             in the first strategy if a cell does not contain a mine we

+#             can skip the surrounding scan, so we'll use that. When

+#             implementing the game we only need to precompute this step

+#             once so we needn't worry too much about time complexity but

+#             it shouldn't be ignored either.

+# 

+#             Persenting the deltas as a list of arrays rather than

+#             generating them on the fly is less redundant processing, and

+#             we have no need to skip the no-op step of delta [0,0] as it's

+#             never addressed.

+# 

+#             In an actual game we'd just probably just roll this

+#             neighbor-data step into the map-generation phase, unless

+#             perhaps we wanted to present just the mines for display

+#             design, say at the end or when the player lost or such. But

+#             we won't worry about that. In any case a simple map generator

+#             is included, with parameters for height, width and %

+#             probability of a cell being a mine.

+# 

+#             

+#         

+#             

+#             

+#             

+#       © 2021 colin crain

+## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##

+

+

+

+use warnings;

+use strict;

+use utf8;

+use feature ":5.26";

+use feature qw(signatures);

+no warnings 'experimental::signatures';

+

+

+# ## uncomment for the example:

+# 

+# my $mat = [ [ qw( x * * * x * x x x x ) ],

+#             [ qw( * * * * * * * * * x ) ],

+#             [ qw( * * * * x * x * x * ) ],

+#             [ qw( * * * x x * * * * * ) ],

+#             [ qw( x * * * x * * * * x ) ] ];

+

+my $mat = generate_map(10,10,30);

+            

+my @mat = map { [ map { $_ eq '*' ? 0 : $_ } $_->@* ] } $mat->@* ;

+my @deltas = (  [-1,-1], [-1,0 ], [-1, 1], 

+                [ 0,-1],          [ 0,1 ], 

+                [ 1,-1], [ 1, 0], [ 1, 1]  );

+

+for my $i ( 0..$#mat ) {

+    for my $j ( 0..$mat[0]->$#* ) {

+        next unless $mat->[$i][$j] eq 'x';

+        for my $d ( @deltas ) {

+            my $r = $i + $d->[0];

+            my $c = $j + $d->[1];

+            if ( @mat > $r >= 0 and $mat[0]->@* > $c >= 0 ) {

+                next if $mat[$r][$c] eq 'x';

+                $mat[$r][$c]++;

+            }

+        }

+    }

+}

+say "\nInput:\n";

+say "$_->@*" for $mat->@*;

+

+say "\nOutput:\n";

+say "$_->@*" for @mat;

+

+

+sub generate_map ($r, $c, $pct) {

+## height in rows, width in columns, % chance of cell being a mine

+    my $mat = [];

+    for my $row ( 0..$r ) {

+        for my $col ( 0.. $c ) {

+            $mat->[$row][$col] =  rand(100)-$pct < 0 

+                                    ? 'x'

+                                    : '*' ;

+        }

+    }

+    return $mat;

+}

diff --git a/challenge-126/colin-crain/raku/ch-1.raku b/challenge-126/colin-crain/raku/ch-1.raku
new file mode 100644
index 0000000000..1a30573417
--- /dev/null
+++ b/challenge-126/colin-crain/raku/ch-1.raku
@@ -0,0 +1,22 @@
+#!/usr/bin/env perl6
+#
+#
+#       126-1-no-one-home.raku
+#
+#
+#
+#       © 2021 colin crain
+## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
+
+
+
+unit sub MAIN ( $number = 5 ) ;
+
+
+say (2..$number).grep({ !/1/ })
+                .elems;
+        
+
+ 
+
+
diff --git a/challenge-126/colin-crain/raku/ch-2.raku b/challenge-126/colin-crain/raku/ch-2.raku
new file mode 100644
index 0000000000..c7d3e9da2c
--- /dev/null
+++ b/challenge-126/colin-crain/raku/ch-2.raku
@@ -0,0 +1,53 @@
+#!/usr/bin/env perl6
+#
+#
+#       126-2-clean-sweep.raku
+#
+#
+#
+#       © 2021 colin crain
+## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
+
+
+
+unit sub MAIN () ;
+
+
+my $m = 3;
+my $n = 3;
+my $pct = 30;
+
+my @mat = generate_map( $m, $n, $pct );
+say "$_" for @mat;
+
+my @map = @mat.map({ $_.map({ $_ eq '*' ?? 0 !! $_ }).Array });
+say "$_" for @map;
+
+my @range = -1, 0, 1;
+my @deltas = (@range X @range).grep({all( $_ ) != 0});
+
+
+sub generate_map ($m, $n, $pct) {
+## height in rows, width in columns, % chance of cell being a mine
+    my @mat;
+    my @list = |('x' xx $pct), |('*' xx 100 - $pct);
+    for (^$m X ^$n) -> ($r, $c) {
+        @mat[$r][$c] = @list.roll;
+    }
+    return @mat;
+}
+
+for ^(@map.elems) X ^(@map[0].elems) -> ($i, $j) {
+    next unless @map[$i][$j] eq 'x';
+    for @deltas -> $d {
+            my $r = $i + $d[0];
+            my $c = $j + $d[1];
+            if ( @map.elems > $r >= 0 and @map[0].elems > $c >= 0 ) {
+                next if @map[$r][$c] eq 'x';
+                @map[$r][$c] += 1;
+            }
+    }
+
+}
+
+say "$_" for @map;
diff --git a/stats/pwc-current.json b/stats/pwc-current.json
index a323b216db..ed2bb912dc 100644
--- a/stats/pwc-current.json
+++ b/stats/pwc-current.json
@@ -1,8 +1,170 @@
 {
+   "subtitle" : {
+      "text" : "[Champions: 28] Last updated at 2021-08-22 04:21:59 GMT"
+   },
+   "xAxis" : {
+      "type" : "category"
+   },
+   "plotOptions" : {
+      "series" : {
+         "dataLabels" : {
+            "format" : "{point.y}",
+            "enabled" : 1
+         },
+         "borderWidth" : 0
+      }
+   },
+   "series" : [
+      {
+         "data" : [
+            {
+               "y" : 4,
+               "drilldown" : "Andinus",
+               "name" : "Andinus"
+            },
+            {
+               "drilldown" : "Andrew Shitov",
+               "name" : "Andrew Shitov",
+               "y" : 1
+            },
+            {
+               "y" : 2,
+               "name" : "Andrezgz",
+               "drilldown" : "Andrezgz"
+            },
+            {
+               "name" : "Belmark Caday",
+               "drilldown" : "Belmark Caday",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Cheok-Yin Fung",
+               "name" : "Cheok-Yin Fung"
+            },
+            {
+               "y" : 5,
+               "name" : "Colin Crain",
+               "drilldown" : "Colin Crain"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Cristina Heredia",
+               "name" : "Cristina Heredia"
+            },
+            {
+               "drilldown" : "Dave Jacoby",
+               "name" : "Dave Jacoby",
+               "y" : 3
+            },
+            {
+               "drilldown" : "Duane Powell",
+               "name" : "Duane Powell",
+               "y" : 2
+            },
+            {
+               "name" : "Flavio Poletti",
+               "drilldown" : "Flavio Poletti",
+               "y" : 6
+            },
+            {
+               "name" : "James Smith",
+               "drilldown" : "James Smith",
+               "y" : 3
+            },
+            {
+               "name" : "Jorg Sommrey",
+               "drilldown" : "Jorg Sommrey",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Konstantinos Giannakakis",
+               "name" : "Konstantinos Giannakakis",
+               "y" : 2
+            },
+            {
+               "drilldown" : "Laurent Rosenfeld",
+               "name" : "Laurent Rosenfeld",
+               "y" : 5
+            },
+            {
+               "y" : 2,
+               "name" : "Lubos Kolouch",
+               "drilldown" : "Lubos Kolouch"
+            },
+            {
+               "y" : 4,
+               "name" : "Luca Ferrari",
+               "drilldown" : "Luca Ferrari"
+            },
+            {
+               "name" : "Mark Anderson",
+               "drilldown" : "Mark Anderson",
+               "y" : 2
+            },
+            {
+               "y" : 2,
+               "drilldown" : "Matthew Neleigh",
+               "name" : "Matthew Neleigh"
+            },
+            {
+               "y" : 1,
+               "drilldown" : "Olivier Delouya",
+               "name" : "Olivier Delouya"
+            },
+            {
+               "y" : 2,
+               "name" : "Paul Fajman",
+               "drilldown" : "Paul Fajman"
+            },
+            {
+               "y" : 2,
+               "name" : "Pete Houston",
+               "drilldown" : "Pete Houston"
+            },
+            {
+               "name" : "Roger Bell_West",
+               "drilldown" : "Roger Bell_West",
+               "y" : 5
+            },
+            {
+               "y" : 3,
+               "name" : "Simon Green",
+               "drilldown" : "Simon Green"
+            },
+            {
+               "name" : "Simon Proctor",
+               "drilldown" : "Simon Proctor",
+               "y" : 2
+            },
+            {
+               "name" : "Steven Wilson",
+               "drilldown" : "Steven Wilson",
+               "y" : 1
+            },
+            {
+               "y" : 4,
+               "name" : "Stuart Little",
+               "drilldown" : "Stuart Little"
+            },
+            {
+               "drilldown" : "Ulrich Rieke",
+               "name" : "Ulrich Rieke",
+               "y" : 4
+            },
+            {
+               "name" : "W. Luis Mochan",
+               "drilldown" : "W. Luis Mochan",
+               "y" : 3
+            }
+         ],
+         "name" : "The Weekly Challenge - 126",
+         "colorByPoint" : 1
+      }
+   ],
    "drilldown" : {
       "series" : [
          {
-            "name" : "Andinus",
             "id" : "Andinus",
             "data" : [
                [
@@ -13,7 +175,8 @@
                   "Blog",
                   2
                ]
-            ]
+            ],
+            "name" : "Andinus"
          },
          {
             "name" : "Andrew Shitov",
@@ -26,48 +189,64 @@
             ]
          },
          {
+            "name" : "Andrezgz",
+            "id" : "Andrezgz",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "id" : "Andrezgz",
-            "name" : "Andrezgz"
+            ]
          },
          {
+            "name" : "Belmark Caday",
+            "id" : "Belmark Caday",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "id" : "Belmark Caday",
-            "name" : "Belmark Caday"
+            ]
          },
          {
+            "id" : "Cheok-Yin Fung",
             "data" : [
                [
                   "Perl",
                   2
                ]
             ],
-            "id" : "Cheok-Yin Fung",
             "name" : "Cheok-Yin Fung"
          },
          {
+            "data" : [
+               [
+                  "Perl",
+                  2
+               ],
+               [
+                  "Raku",
+                  2
+               ],
+               [
+                  "Blog",
+                  1
+               ]
+            ],
+            "id" : "Colin Crain",
+            "name" : "Colin Crain"
+         },
+         {
             "id" : "Cristina Heredia",
-            "name" : "Cristina Heredia",
             "data" : [
                [
                   "Perl",
                   1
                ]
-            ]
+            ],
+            "name" : "Cristina Heredia"
          },
          {
-            "name" : "Dave Jacoby",
-            "id" : "Dave Jacoby",
             "data" : [
                [
                   "Perl",
@@ -77,19 +256,22 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Dave Jacoby",
+            "name" : "Dave Jacoby"
          },
          {
+            "name" : "Duane Powell",
+            "id" : "Duane Powell",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ],
-            "id" : "Duane Powell",
-            "name" : "Duane Powell"
+            ]
          },
          {
+            "id" : "Flavio Poletti",
             "data" : [
                [
                   "Perl",
@@ -104,10 +286,11 @@
                   2
                ]
             ],
-            "id" : "Flavio Poletti",
             "name" : "Flavio Poletti"
          },
          {
+            "name" : "James Smith",
+            "id" : "James Smith",
             "data" : [
                [
                   "Perl",
@@ -117,31 +300,30 @@
                   "Blog",
                   1
                ]
-            ],
-            "name" : "James Smith",
-            "id" : "James Smith"
+            ]
          },
          {
-            "id" : "Jorg Sommrey",
             "name" : "Jorg Sommrey",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Jorg Sommrey"
          },
          {
-            "name" : "Konstantinos Giannakakis",
-            "id" : "Konstantinos Giannakakis",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "id" : "Konstantinos Giannakakis",
+            "name" : "Konstantinos Giannakakis"
          },
          {
+            "id" : "Laurent Rosenfeld",
             "data" : [
                [
                   "Perl",
@@ -156,7 +338,6 @@
                   1
                ]
             ],
-            "id" : "Laurent Rosenfeld",
             "name" : "Laurent Rosenfeld"
          },
          {
@@ -166,12 +347,10 @@
                   2
                ]
             ],
-            "name" : "Lubos Kolouch",
-            "id" : "Lubos Kolouch"
+            "id" : "Lubos Kolouch",
+            "name" : "Lubos Kolouch"
          },
          {
-            "id" : "Luca Ferrari",
-            "name" : "Luca Ferrari",
             "data" : [
                [
                   "Raku",
@@ -181,7 +360,9 @@
                   "Blog",
                   2
                ]
-            ]
+            ],
+            "id" : "Luca Ferrari",
+            "name" : "Luca Ferrari"
          },
          {
             "data" : [
@@ -194,28 +375,28 @@
             "name" : "Mark Anderson"
          },
          {
-            "name" : "Matthew Neleigh",
             "id" : "Matthew Neleigh",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "Matthew Neleigh"
          },
          {
+            "name" : "Olivier Delouya",
             "data" : [
                [
                   "Perl",
                   1
                ]
             ],
-            "id" : "Olivier Delouya",
-            "name" : "Olivier Delouya"
+            "id" : "Olivier Delouya"
          },
          {
-            "id" : "Paul Fajman",
             "name" : "Paul Fajman",
+            "id" : "Paul Fajman",
             "data" : [
                [
                   "Perl",
@@ -225,17 +406,16 @@
          },
          {
             "id" : "Pete Houston",
-            "name" : "Pete Houston",
             "data" : [
                [
                   "Perl",
                   2
                ]
-            ]
+            ],
+            "name" : "Pete Houston"
          },
          {
             "name" : "Roger Bell_West",
-            "id" : "Roger Bell_West",
             "data" : [
                [
                   "Perl",
@@ -249,7 +429,8 @@
                   "Blog",
                   1
                ]
-            ]
+            ],
+            "id" : "Roger Bell_West"
          },
          {
             "data" : [
@@ -266,26 +447,27 @@
             "name" : "Simon Green"
          },
          {
-            "name" : "Simon Proctor",
             "id" : "Simon Proctor",
             "data" : [
                [
                   "Raku",
                   2
                ]
-            ]
+            ],
+            "name" : "Simon Proctor"
          },
          {
+            "name" : "Steven Wilson",
             "data" : [
                [
                   "Perl",
                   1
                ]
             ],
-            "id" : "Steven Wilson",
-            "name" : "Steven Wilson"
+            "id" : "Steven Wilson"
          },
          {
+            "id" : "Stuart Little",
             "data" : [
                [
                   "Perl",
@@ -296,10 +478,11 @@
                   2
                ]
             ],
-            "name" : "Stuart Little",
-            "id" : "Stuart Little"
+            "name" : "Stuart Little"
          },
          {
+            "name" : "Ulrich Rieke",
+            "id" : "Ulrich Rieke",
             "data" : [
                [
                   "Perl",
@@ -309,9 +492,7 @@
                   "Raku",
                   2
                ]
-            ],
-            "id" : "Ulrich Rieke",
-            "name" : "Ulrich Rieke"
+            ]
          },
          {
             "data" : [
@@ -324,186 +505,28 @@
                   1
                ]
             ],
-            "name" : "W. Luis Mochan",
-            "id" : "W. Luis Mochan"
+            "id" : "W. Luis Mochan",
+            "name" : "W. Luis Mochan"
          }
       ]
    },
    "title" : {
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