Exercise 14 Index   <<   >>


 

Run some benchmarks onon 4-byte integers, 4-column matrices of letters of the alphabet, and 32-column boolean matrices.























   i ← ?1e6⍴2e9
   a ← ⎕ucs ⍉(4⍴256)⊤i
   b ← ⍉(32⍴2)⊤i

   cmpx 'i⍳i' 'a⍳a' 'b⍳b'
i⍳i → 1.38e¯1 |   0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
a⍳a → 2.37e¯1 | +71% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
b⍳b → 2.49e¯1 | +80% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕