diff options
Diffstat (limited to 'challenge-082/stuart-little/lua/ch-2.lua')
| -rwxr-xr-x | challenge-082/stuart-little/lua/ch-2.lua | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/challenge-082/stuart-little/lua/ch-2.lua b/challenge-082/stuart-little/lua/ch-2.lua new file mode 100755 index 0000000000..07b1a448f6 --- /dev/null +++ b/challenge-082/stuart-little/lua/ch-2.lua @@ -0,0 +1,11 @@ +#!/usr/bin/env lua + +-- run <script> <space-separated strings, with the target string last> + +function canInterleave(a,b,c) + if math.max(a:len(),b:len(),c:len()) == 0 then return true end + if a:sub(1,1) == c:sub(1,1) then return canInterleave(a:sub(2),b,c:sub(2)) end + if b:sub(1,1) == c:sub(1,1) then return canInterleave(a,b:sub(2),c:sub(2)) end + return false +end +print(canInterleave(table.unpack(arg,1,3)) and 1 or 0) |