Sorting & Searching: Small Range Integers Index   <<   >>

 
   x ← ¯1e9 + ?1e6⍴2e9

   cmpx '(∪x)⍳x' '{(∪⍵)⍳⍵}x⍳x'
  (∪x)⍳x      → 5.08E¯1 |   0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
  {(∪⍵)⍳⍵}x⍳x → 3.87E¯1 | -24% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕     

   x ← (2*¯24) × ¯1e9+?1e6⍴2e9

   cmpx '(∪x)⍳x' '{(∪⍵)⍳⍵}x⍳x'
  (∪x)⍳x      → 9.53E¯1 |   0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
  {(∪⍵)⍳⍵}x⍳x → 3.83E¯1 | -60% ⎕⎕⎕⎕⎕⎕⎕⎕