Fun_With_Math/experiments/basic/collatz.html at main · SimiaCryptus/Fun_With_Math · GitHub

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<!doctype html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta
      name="description"
      content="Explore the Collatz Conjecture: the 3n+1 problem visualized."
    />
    <title>Collatz Conjecture – Fun With Math</title>
    <link rel="stylesheet" href="../../css/style.css" />
    <link rel="stylesheet" href="../../css/experiments-basic-collatz.css" />
  </head>
  <body>
    <nav>
      <a class="brand" href="../../index.html">∑ Fun With Math</a>
      <a href="../../index.html">← All Experiments</a>
    </nav>

    <div class="page-header">
      <h1>Collatz Conjecture</h1>
      <p>Pick any positive integer. Apply the rule. Will you always reach 1?</p>
    </div>

    <div class="experiment-layout">
      <div>
        <div id="statsRow">
          <span>Steps: <strong id="stepsEl">—</strong></span>
          <span>Peak value: <strong id="peakEl">—</strong></span>
          <span>Starting at: <strong id="startEl">—</strong></span>
        </div>
        <div class="canvas-wrapper">
          <canvas id="canvas"></canvas>
        </div>
        <div class="info-box" style="margin-top: 1rem">
          <h4>Sequence</h4>
          <div id="resultBox">—</div>
        </div>
      </div>

      <aside class="controls">
        <h3>Controls</h3>

        <label>
          Starting Number
          <input type="number" id="startInput" value="27" min="1" max="100000" />
        </label>

        <div style="display: flex; gap: 0.5rem; flex-wrap: wrap">
          <button class="btn btn-primary" id="goBtn">▶ Compute</button>
          <button class="btn btn-secondary" id="randomBtn">🎲 Random</button>
        </div>

        <label>
          Compare Range: 2 – <span id="rangeLabel">50</span>
          <input type="range" id="rangeSlider" min="10" max="500" step="10" value="50" />
        </label>
        <button class="btn btn-secondary" id="compareBtn">📊 Compare Range</button>

        <div class="info-box">
          <h4>The Rule</h4>
          <p>
            Given a positive integer <code>n</code>:<br />
            • If <code>n</code> is even → <code>n / 2</code><br />
            • If <code>n</code> is odd → <code>3n + 1</code><br />
            Repeat until <code>n = 1</code>.
          </p>
        </div>

        <div id="compareTable"></div>
      </aside>
    </div>

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      <p><a href="../../index.html">← Back to all experiments</a></p>
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