1 2 3 4 5 6 7
⎕IO←0 TargetIndex←=⊢⍤/⍋⍤⍋⍤⊣ ⎕←1 5 3 2 4 2 TargetIndex 2 ⎕←1 2 4 3 5 TargetIndex 6 ⎕←5 3 2 4 2 1 TargetIndex 4