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Delta Stile (⍋)

⍋ 𝕩: Grade Up

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Indices of 𝕩 that would sort its major cells in ascending order.

    a ← 3‿2‿1

    ⍋ a

    (⍋a) ⊏ a

𝕨 ⍋ 𝕩: Bins Up

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Binary search for each cell of 𝕩 in 𝕨, returning the number of major cells in 𝕨 less than or equal to that cell.

𝕨 must be sorted in ascending order.

    3‿4‿5‿7 ⍋ 2

    3‿4‿5‿7 ⍋ 2‿6