(49g 50g) Shoelace algorithm

[John Keith]

(08-24-2018 05:02 PM)Thomas Klemm Wrote:  Does that mean that we could use this?

Code:

« DUP LRLLD
  SWAP LROLL
  - * ∑LIST 2 /
»

Yes, it not only works, it is the smallest and fastest program.

The complete list, timing in milliseconds for the Cat:

Code:


Your vector version: 446ms  57 bytes
My program above:    164ms 107    "
Your program above:  157ms  76    "
ListExt version:     140ms  41.5  "