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

 
   x ← ¯1e9 + ?1e6⍴2e9
   y ←  1e9 + ?1e6⍴2e5

   cmpx 'x⍳x' 'y⍳y'
  x⍳x → 3.20E¯1 |   0% ⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕⎕
* y⍳y → 4.10E¯2 | -87% ⎕⎕⎕                 

              large     small
              range     range    ratio

⍵⍳⍵          3.20e¯1   4.10e¯2    7.8
⍋⍵           1.45e¯1   5.57e¯2    2.6
{⍵[⍋⍵]}      5.57e¯2   1.17e¯2    4.8