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<title>BQN: Delta Stile (⍋)</title>
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<div class="nav">(<a href="https://github.com/mlochbaum/BQN">github</a>) / <a href="../index.html">BQN</a> / <a href="index.html">help</a></div>
<h1 id="delta-stile-"><a class="header" href="#delta-stile-">Delta Stile (<code><span class='Function'>⍋</span></code>)</a></h1>
<h2 id="-𝕩-grade-up"><a class="header" href="#-𝕩-grade-up"><code><span class='Function'>⍋</span> <span class='Value'>𝕩</span></code>: Grade Up</a></h2>
<p><a class="fulldoc" href="../doc/order.html#grade">→full documentation</a></p>
<p>Indices of <code><span class='Value'>𝕩</span></code> that would sort its major cells in ascending order.</p>
<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=YSDihpAgM+KAvzLigL8xCgrijYsgYQoKKOKNi2EpIOKKjyBh">↗️</a><pre> <span class='Value'>a</span> <span class='Gets'>←</span> <span class='Number'>3</span><span class='Ligature'>‿</span><span class='Number'>2</span><span class='Ligature'>‿</span><span class='Number'>1</span>
<span class='Function'>⍋</span> <span class='Value'>a</span>
⟨ 2 1 0 ⟩
<span class='Paren'>(</span><span class='Function'>⍋</span><span class='Value'>a</span><span class='Paren'>)</span> <span class='Function'>⊏</span> <span class='Value'>a</span>
⟨ 1 2 3 ⟩
</pre>
<h2 id="𝕨--𝕩-bins-up"><a class="header" href="#𝕨--𝕩-bins-up"><code><span class='Value'>𝕨</span> <span class='Function'>⍋</span> <span class='Value'>𝕩</span></code>: Bins Up</a></h2>
<p><a class="fulldoc" href="../doc/order.html#bins">→full documentation</a></p>
<p>Binary search for each cell of <code><span class='Value'>𝕩</span></code> in <code><span class='Value'>𝕨</span></code>, returning the number of major cells in <code><span class='Value'>𝕨</span></code> less than or equal to that cell.</p>
<p><code><span class='Value'>𝕨</span></code> must be sorted in ascending order.</p>
<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=M+KAvzTigL814oC/NyDijYsgMgoKM+KAvzTigL814oC/NyDijYsgMuKAvzY=">↗️</a><pre> <span class='Number'>3</span><span class='Ligature'>‿</span><span class='Number'>4</span><span class='Ligature'>‿</span><span class='Number'>5</span><span class='Ligature'>‿</span><span class='Number'>7</span> <span class='Function'>⍋</span> <span class='Number'>2</span>
┌·
· 0
┘
<span class='Number'>3</span><span class='Ligature'>‿</span><span class='Number'>4</span><span class='Ligature'>‿</span><span class='Number'>5</span><span class='Ligature'>‿</span><span class='Number'>7</span> <span class='Function'>⍋</span> <span class='Number'>2</span><span class='Ligature'>‿</span><span class='Number'>6</span>
⟨ 0 3 ⟩
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