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+<head>
+  <link href="../favicon.ico" rel="shortcut icon" type="image/x-icon"/>
+  <link href="../style.css" rel="stylesheet"/>
+  <title>BQN: Delta Stile (`⍋`)</title>
+</head>
+<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="--grade-up"><a class="header" href="#--grade-up"><code><span class='Function'>⍋</span> <span class='Value'>𝕩</span></code>: Grade Up</a></h2>
+<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=ICAgYSDihpAgM+KAvzLigL8xCgogICDijYsgYQoKICAgKOKNi2EpIOKKjyBh">↗️</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="---bins-up"><a class="header" href="#---bins-up"><code><span class='Value'>𝕨</span> <span class='Function'>⍋</span> <span class='Value'>𝕩</span></code>: Bins Up</a></h2>
+<p>Binary search for each element of <code><span class='Value'>𝕩</span></code> in <code><span class='Value'>𝕨</span></code>, and return the index found, if any.</p>
+<h2 id="-must-be-sorted-in-ascending-order"><a class="header" href="#-must-be-sorted-in-ascending-order"><code><span class='Value'>𝕨</span></code> must be sorted in ascending order.</a></h2>
+<a class="replLink" title="Open in the REPL" target="_blank" href="https://mlochbaum.github.io/BQN/try.html#code=ICAgM+KAvzTigL814oC/NyDijYsgMgoKICAgM+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 ⟩
+</pre>