Merge pull request #10795 from wambash/challenge-week-285

Challenge week 285

2 files changed, 49 insertions, 0 deletions

diff --git a/challenge-285/wambash/elixir/ch-2.exs b/challenge-285/wambash/elixir/ch-2.exs
new file mode 100644
index 0000000000..499304306b
--- /dev/null
+++ b/challenge-285/wambash/elixir/ch-2.exs
@@ -0,0 +1,30 @@
+defmodule Change do
+  defp _making({0,_}),do: [1]
+  defp _making({_,[]}),do: [0]
+  defp _making({amount, [hc| coins]}) when hc > amount, do: _making({amount,coins})
+  defp _making({amount, coins}) do
+    coins
+    |> Enum.flat_map(fn
+      x -> _making(
+        {
+          amount - x,
+          coins |> Enum.drop_while( & &1 > x )
+        }
+      )
+    end)
+  end
+  def making(w) do
+    _making(w) |> Enum.sum
+  end
+end
+
+ExUnit.start()
+
+defmodule ChangeTest do
+  use ExUnit.Case
+  test "Change" do
+    assert Change.making({9,[50,25,10,5,1]})  == 2
+    assert Change.making({100,[50,25,10,5,1]}) == 292
+    assert Change.making({15,[50,25,10,5,1]})  == 6
+  end
+end
diff --git a/challenge-285/wambash/raku/ch-1.raku b/challenge-285/wambash/raku/ch-1.raku
new file mode 100644
index 0000000000..dc74e10a33
--- /dev/null
+++ b/challenge-285/wambash/raku/ch-1.raku
@@ -0,0 +1,19 @@
+#!/usr/bin/env raku
+
+multi no_connection (+@ ($from, $to)) {  $to  }
+multi no_connection (+@routes) {
+    my :(@from, @to) := [Z] @routes;
+
+    @to.first: { $_ ∉ @from }
+}
+
+multi MAIN (Bool :test($)!) {
+    use Test;
+    is no_connection(<B C>, <D B>, <C A>), 'A';
+    is no_connection(<A Z>), 'Z';
+    done-testing;
+}
+
+multi MAIN (+@routes) {
+    say no_connection +@routes
+}