or download this
Rate index mod first new org
index 1109/s -- -24% -38% -48% -52% # moved @mult out loop and
+used index
...
first 1780/s 61% 22% -- -16% -22% # The original long code
new 2116/s 91% 45% 19% -- -8% # my version, but inline +=
+ * shift for reverse split
org 2288/s 106% 56% 29% 8% -- # my original update s/(\d+
+)-//; and split