solutions week 138

2 files changed, 43 insertions, 0 deletions

diff --git a/challenge-138/wambash/raku/ch-1.raku b/challenge-138/wambash/raku/ch-1.raku
new file mode 100644
index 0000000000..85e7bb1cfb
--- /dev/null
+++ b/challenge-138/wambash/raku/ch-1.raku
@@ -0,0 +1,19 @@
+#!/usr/bin/env raku
+
+sub workdays ( $year ) {
+    Date.new: :$year
+    andthen $_ ..^ .later: :1year
+    andthen .grep: *.day-of-week !== 6|7
+    andthen .elems
+}
+
+multi MAIN (Bool :test($)!) {
+    use Test;
+    is workdays(2021), 261;
+    is workdays(2020), 262;
+    done-testing;
+}
+
+multi MAIN ( $year ) {
+    say workdays $year
+}
diff --git a/challenge-138/wambash/raku/ch-2.raku b/challenge-138/wambash/raku/ch-2.raku
new file mode 100644
index 0000000000..c4c215d2af
--- /dev/null
+++ b/challenge-138/wambash/raku/ch-2.raku
@@ -0,0 +1,24 @@
+#!/usr/bin/env raku
+
+sub split-number ($n) {
+    1 ..^ $n.chars
+    andthen .combinations
+    andthen .map: {0, |$_, $n.chars}\
+    andthen .map: { .skip Z- $_ }\
+    andthen .skip
+    andthen .map: { $n.comb.rotor($_) }\
+    andthen .tree: *.Seq, *.sum, *.join
+    andthen .first: {$_² == $n}, :p
+}
+
+multi MAIN (Bool :test($)!) {
+    use Test;
+    is split-number(9801), 1=> 99;
+    is split-number(81), 0 => 9;
+    is split-number(36),  Nil;
+    done-testing;
+}
+
+multi MAIN ($n) {
+    say +so split-number $n
+}