Index-of & Co. I Index   <<   >>


 
   S← 3 1 1 2 tindex T

   ⍉ ↑ T ⍳¨ S
3 3 1 0 0
1 1 1 1 1
1 1 1 1 1
2 2 0 2 2
   ⍉ ↑ T ⍳¨ T
0 0 0 0 0
1 1 1 1 1
2 2 0 2 2
3 3 1 0 0
4 4 1 4 4
5 5 0 5 5
6 6 0 6 6
7 7 1 7 7
   (⍉ ↑ T ⍳¨ T) ⍳ (⍉ ↑ T ⍳¨ S)
3 1 1 2
 
   tix1 ← {(⍉↑⍺⍳¨⍺) ⍳ (⍉↑⍺⍳¨⍵)}

   T tix1 S
3 1 1 2