1 files changed, 33 insertions, 0 deletions
diff --git a/challenge-151/abigail/lua/ch-2.lua b/challenge-151/abigail/lua/ch-2.lua
new file mode 100644
index 0000000000..98df0aae1d
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+++ b/challenge-151/abigail/lua/ch-2.lua
@@ -0,0 +1,33 @@
+#!/opt/local/bin/lua
+
+--
+-- See https://theweeklychallenge.org/blog/perl-weekly-challenge-151
+--
+
+--
+-- Run as: lua ch-2.lua < input-file
+--
+
+for line in io . lines () do
+    local houses = {}
+    local best   = {}
+    for val in line : gmatch ("%d+") do
+        houses [#houses + 1] = val
+    end
+
+    for i = #houses, 1, -1 do
+        if     2 >= #houses then
+            best [i] =             houses [i]
+        elseif i == #houses then
+            best [i] =             houses [i]
+        elseif i == 0       then
+            best [i] =             houses [i] + best [i + 2]
+        elseif i == #houses - 1 then
+            best [i] = math . max (houses [i],  best [i + 1])
+        else
+            best [i] = math . max (houses [i] + best [i + 2],
+                                                best [i + 1])
+        end
+    end
+    print (best [1])
+end