solutions week 114

2 files changed, 48 insertions, 0 deletions

diff --git a/challenge-114/wambash/raku/ch-1.raku b/challenge-114/wambash/raku/ch-1.raku
new file mode 100644
index 0000000000..ede878cf08
--- /dev/null
+++ b/challenge-114/wambash/raku/ch-1.raku
@@ -0,0 +1,22 @@
+#!/usr/bin/env raku
+
+sub next-palindrom-number ($n) {
+    my $chars = $n.chars/2;
+    $n
+    andthen .substr(0,$chars.ceiling)
+    andthen $_,$_+1
+    andthen .map: { $_ ~ .substr(0,$chars.floor).flip }\
+    andthen .first: {$_ > $n}
+}
+
+multi MAIN (Bool :test($)!) {
+    use Test;
+    is next-palindrom-number(1200), 1221;
+    is next-palindrom-number(1234), 1331;
+    is next-palindrom-number(999),  1001;
+    done-testing;
+}
+
+multi MAIN ($n) {
+    say next-palindrom-number $n
+}
diff --git a/challenge-114/wambash/raku/ch-2.raku b/challenge-114/wambash/raku/ch-2.raku
new file mode 100644
index 0000000000..bcfe5026da
--- /dev/null
+++ b/challenge-114/wambash/raku/ch-2.raku
@@ -0,0 +1,26 @@
+#!/usr/bin/env raku
+sub ones-in-binary ($n) {
+    $n.base(2).comb.sum
+}
+
+sub higher-integer-set-bits ( $n ) {
+    (1,2,4 ...*)
+    andthen .first: { $n !%% (2 * $_ ) }\
+    andthen $n + $_
+    andthen $_ + 2**(ones-in-binary($n)-  ones-in-binary($_)) - 1
+}
+
+
+multi MAIN (Bool :test($)!) {
+    use Test;
+    is higher-integer-set-bits(3),5;
+    is higher-integer-set-bits(12),17;
+    is higher-integer-set-bits(:2('101')),:2('110');
+    is higher-integer-set-bits(:2('101_111')), :2('110_111');
+    is higher-integer-set-bits(:2('11_111_111')),:2('101_111_111');
+    done-testing;
+}
+
+multi MAIN ( $n ) {
+    say higher-integer-set-bits $n
+}