From 24ebe044fcc947417212a49b55aabaeac8d50695 Mon Sep 17 00:00:00 2001
From: rir <rirans@comcast.net>
Date: Mon, 12 Dec 2022 17:24:48 -0500
Subject: 195

---
 challenge-195/0rir/raku/ch-1.raku | 52 ++++++++++++++++++++++++++++++++++
 challenge-195/0rir/raku/ch-2.raku | 59 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 111 insertions(+)
 create mode 100644 challenge-195/0rir/raku/ch-1.raku
 create mode 100644 challenge-195/0rir/raku/ch-2.raku

diff --git a/challenge-195/0rir/raku/ch-1.raku b/challenge-195/0rir/raku/ch-1.raku
new file mode 100644
index 0000000000..2c7de79d23
--- /dev/null
+++ b/challenge-195/0rir/raku/ch-1.raku
@@ -0,0 +1,52 @@
+#!/usr/bin/env raku
+# :vim ft=raku sw=4 expandtab  # 🦋 ∅ ≡ ∩ ≢ ∈ «␤»
+use v6.d;
+use Test;
+
+=begin comment
+195-1: Special Integers         Submitted by: Mohammad S Anwar
+
+An integer is special when all of its digits are unique.
+Given a positive integer, $n > 0,  print the count of all special integers
+between 1 and $n.
+
+Example 1:
+Input: $n = 15
+Output: 14 as except 11 all other integers between 1 and 15 are spcial.
+Example 2:
+Input: $n = 35
+Output: 32 as except 11, 22, 33 all others are special.
+=end comment
+
+constant @special-int-ct = gather { 
+    take Nil;
+    loop {
+        state ( $i, $prev) = 0, 0;
+        ++$i;
+        take $i.Str.comb.elems == $i.Str.comb.unique.elems ?? ++$prev !! $prev;
+    }
+}
+
+multi MAIN ( 'test' ) {
+    my @Test =
+        { in =>  15,        exp =>      14, },
+        { in =>  35,        exp =>      32, },
+        { in =>  99,        exp =>      90, },
+        { in =>  200,       exp =>     162, },
+        { in =>  180,       exp =>     147, },
+        { in =>  1_000,     exp =>     738, },
+        { in =>  10_000,    exp =>   5_274, },
+        { in =>  100_000,   exp =>  32_490, },
+        { in =>  1_000_000, exp => 168_570, },
+    ;
+    plan +@Test;
+    for @Test -> %t {
+        is @special-int-ct[%t<in>], %t<exp>, " %t<exp> <- 1..%t<in>";
+    }
+    done-testing;
+    exit;
+}
+
+multi MAIN( $n = 180) {
+    say "Input: \$n = 180\nOutput: @special-int-ct[$n]";
+}
diff --git a/challenge-195/0rir/raku/ch-2.raku b/challenge-195/0rir/raku/ch-2.raku
new file mode 100644
index 0000000000..2356b48bec
--- /dev/null
+++ b/challenge-195/0rir/raku/ch-2.raku
@@ -0,0 +1,59 @@
+#!/usr/bin/env raku
+# :vim ft=raku sw=4 expandtab  # 🦋 ∅ ≡ ∩ ≢ ∈ «␤»
+use v6.d;
+use Test;
+
+=begin comment
+195-2: Most Frequent Even       Submitted by: Mohammad S Anwar
+
+Given a list of numbers, @list, find the most frequent even numbers in the
+list. In case you get more than one even number then return the smallest
+even integer. For all other case, return -1.
+
+Example 1
+Input: @list = (1,1,2,6,2)
+Output: 2 as there are only 2 even numbers 2 and 6 and of those 2 appears the most.
+Example 2
+Input: @list = (1,3,5,7)
+Output: -1 since no even numbers found in the list
+Example 3
+Input: @list = (6,4,4,6,1)
+Output: 4 since there are only two even numbers 4 and 6. They both appears the equal number of times, so pick the smallest.
+=end comment
+
+sub most-freqy-even( @l where * !~~ () --> Int) {
+    my %h = Bag.new( @l.grep( * %% 2));
+    %h = grep { .key == %h.keys.min}, %h.grep( { .value ~~ %h.values.max});
+    return (Int) if %h ~~ {};
+    %h.keys[0].Int;
+}
+
+multi MAIN ( 'test' ) {
+    my @Die = { in => (),  exp => (Int),   }, ;
+
+    my @Test =
+        { in => (1,1,2,2,6,6),      exp => 2,       },
+        { in => (1,1,2,6,2),        exp => 2,       },
+        { in => (1,3,5,7),          exp => (Int),   },
+        { in => (6,4,4,6,1),        exp => 4,       },
+        { in => (6,6,6,6,6),        exp => 6,       },
+        { in => (1,2,3,4,5),        exp => 2,       },
+        { in => (2,2,3,3,6,6),      exp => 2,       },
+    ;
+    plan +@Test + @Die;
+    for @Die  -> %t {
+        dies-ok { most-freqy-even( @(%t<in>))},
+                "most-freqy-even("~  (%t<exp>//"(Int)")  ~") dies.";
+   }
+   for @Test -> %t {
+        quietly is most-freqy-even( @(%t<in>) ), %t<exp>,
+            (%t<exp> // '(Int)')  ~" <- %t<in>";
+    }
+    done-testing;
+}
+
+multi MAIN() {
+    my @list = (1,2,2,2,2,2,3,6,6,6,6,6);
+    say "Input: \@list = @list.join(', ');\nOutput: ",
+            &most-freqy-even(@list) // -1;
+}
-- 
cgit