From 42d66b2a8f658f73c1c37d42248a86d760a11009 Mon Sep 17 00:00:00 2001
From: chirvasitua <stuart-little@users.noreply.github.com>
Date: Mon, 5 Jul 2021 19:42:33 -0400
Subject: 1st commit on 119_lua

---
 challenge-119/stuart-little/lua/ch-2.lua | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100755 challenge-119/stuart-little/lua/ch-2.lua

(limited to 'challenge-119/stuart-little/lua/ch-2.lua')

diff --git a/challenge-119/stuart-little/lua/ch-2.lua b/challenge-119/stuart-little/lua/ch-2.lua
new file mode 100755
index 0000000000..c10111e775
--- /dev/null
+++ b/challenge-119/stuart-little/lua/ch-2.lua
@@ -0,0 +1,18 @@
+#!/usr/bin/env lua
+
+-- run <script> <number>
+
+function nxt(s)
+   a,b=string.match(s:reverse(),"(3*)(.*)")
+   pre,threes=b:reverse(),a
+   if pre:len() ~= 0 then
+      return math.floor(pre+1) .. string.sub(string.rep("12",threes:len()),1,threes:len())
+   end
+   return string.sub(string.rep("12",s:len()),1,s:len()+1)
+end
+
+out="0"
+for i=1,arg[1] do
+   out=nxt(out)
+end
+print(out)
-- 
cgit