From ffd1c49cd82e7bd0be11ad57ac31090c0dc99b2e Mon Sep 17 00:00:00 2001
From: Roger Bell_West <roger@firedrake.org>
Date: Tue, 28 Jan 2025 12:18:54 +0000
Subject: RogerBW solutions for challenge no. 306

---
 challenge-306/roger-bell-west/lua/ch-2.lua | 34 ++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100755 challenge-306/roger-bell-west/lua/ch-2.lua

(limited to 'challenge-306/roger-bell-west/lua/ch-2.lua')

diff --git a/challenge-306/roger-bell-west/lua/ch-2.lua b/challenge-306/roger-bell-west/lua/ch-2.lua
new file mode 100755
index 0000000000..1d3179e5cb
--- /dev/null
+++ b/challenge-306/roger-bell-west/lua/ch-2.lua
@@ -0,0 +1,34 @@
+#! /usr/bin/lua
+
+function lastelement(a)
+   local b = a
+   while true do
+      table.sort(b)
+      local f = table.remove(b, #b)
+      local s = table.remove(b, #b)
+      if f > s then
+         table.insert(b, f - s)
+      end
+      if #b == 0 then
+         return 0
+      end
+      if #b == 1 then
+         return b[1]
+      end
+   end
+end
+
+if lastelement({3, 8, 5, 2, 9, 2}) == 1 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+io.write(" ")
+
+if lastelement({3, 2, 5}) == 0 then
+  io.write("Pass")
+else
+  io.write("FAIL")
+end
+print("")
+
-- 
cgit