From 3c80dfb0fbe6adb3e1ee5ca9df4cf1fd858279ce Mon Sep 17 00:00:00 2001
From: Philip Hood <hood@panix.com>
Date: Mon, 23 Nov 2020 21:06:48 -0500
Subject: challenges 1 & 2 in raku ...

---
 challenge-088/pkmnx/raku/ch-1.raku | 29 ++++++++++++++
 challenge-088/pkmnx/raku/ch-2.raku | 80 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 109 insertions(+)
 create mode 100755 challenge-088/pkmnx/raku/ch-1.raku
 create mode 100755 challenge-088/pkmnx/raku/ch-2.raku

diff --git a/challenge-088/pkmnx/raku/ch-1.raku b/challenge-088/pkmnx/raku/ch-1.raku
new file mode 100755
index 0000000000..a96fe31f36
--- /dev/null
+++ b/challenge-088/pkmnx/raku/ch-1.raku
@@ -0,0 +1,29 @@
+#!/usr/bin/env rakudo
+
+#
+# ex: ./ch-1.raku 5 2 1 4 3
+#
+
+sub MAIN ( *@N where @N.elems >2 && all(@N) ~~ Int ) {
+
+   my %h;
+   ( (^@N.elems) X (^@N.elems) ).grep(-> ($x,$y) { $x != $y }).map( -> ($x, $y) { %h{$x}.push( @N[$y] ) });
+
+   "Input: ".say;
+   print "@N = (";
+   print @N.join(", ");
+   print ")\n";
+
+   my @output = %h.keys.sort.map(-> $k {
+      my @v = @(%h{$k}); my $prd = ([*] @v);  ('$M[' ~ $k ~ '] = ' ~ @v.join(' x ') ~ ' = ' ~ $prd, $prd )
+   });
+
+   "Output: ".say;
+   print "@M = (";
+   print @output.map( -> ($k,$v) { $v }).join(", ");
+   print ")\n\n";
+
+   @output.map( -> ($k,$v) {
+     $k.say;
+   });
+}
diff --git a/challenge-088/pkmnx/raku/ch-2.raku b/challenge-088/pkmnx/raku/ch-2.raku
new file mode 100755
index 0000000000..496888a5da
--- /dev/null
+++ b/challenge-088/pkmnx/raku/ch-2.raku
@@ -0,0 +1,80 @@
+#!/usr/bin/env rakudo
+#
+# ex. ./ch-2.raku < input.txt # where input is rectangular shaped data block of numbers
+#
+
+sub MAIN () {
+
+   my $d = verifyInput();
+
+   "Input:".say;
+   $d.join("\n").say;
+
+   my $output;
+
+   while ($d) {
+      my $f = $d.shift;
+
+      $output.push($f);
+      if ($d) {
+         my $l = $d.pop.reverse;
+
+         my $leftCnt = 0;
+         my $tmp;
+         while ($d) {
+            my $t = shift $d;
+            if ( $t.elems ) {
+               my $tl = pop $t;
+               $output.push($tl);
+               $tmp.push($t);
+            }
+            $leftCnt++;
+         }
+         
+         if ( $l ) {
+            $output.push($l);
+            $l = Nil;
+         }
+
+         while ( $leftCnt >0 ) { 
+            my $t = pop $tmp;
+            if ( $t.elems ) { 
+               my $tf = shift $t;
+               $output.push($tf);
+               if ( $d ) { 
+                  $d.unshift( ($t) );
+               } else {
+                  $d = [$t];
+               }
+            }
+            $leftCnt--;
+         }
+
+      }
+
+   }
+ 
+   "".say;
+   "Output:".say;
+   $output.List.flat.join(", ").say;
+}
+
+sub verifyInput() { 
+
+   my $data;
+   my $lcnt = 0;
+   my $dsz = 0;
+
+   for $*IN.lines() -> $l { 
+      my @d = $l.comb(/\d+/);
+      if ( $dsz == 0 ) { $dsz = @d.elems; }
+      if ( $dsz != @d.elems ) { die "Input must be in rectangular format."; }
+      $data.push( @d );
+      $lcnt++;
+   }
+
+   if ( $lcnt < 2 ) { die "there must be at least 2 lines of input."; }
+   if ( $dsz < 2 ) { die "line length must be greater than 1."; }
+
+   return $data;
+}
-- 
cgit