aboutsummaryrefslogtreecommitdiff
path: root/challenge-151/abigail/lua/ch-2.lua
diff options
context:
space:
mode:
Diffstat (limited to 'challenge-151/abigail/lua/ch-2.lua')
-rw-r--r--challenge-151/abigail/lua/ch-2.lua25
1 files changed, 25 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..d8ac15c101
--- /dev/null
+++ b/challenge-151/abigail/lua/ch-2.lua
@@ -0,0 +1,25 @@
+#!/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 h = {}
+ for val in line : gmatch ("%d+") do
+ h [#h + 1] = val
+ end
+
+ h [#h + 1] = 0
+ h [#h + 1] = 0
+
+ for i = #h - 2, 3, -1 do
+ h [i] = math . max (h [i] + h [i + 2], h [i + 1])
+ end
+
+ print (h [1] + h [3])
+end