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

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
<!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="Watch the Sieve of Eratosthenes find primes interactively." />
    <title>Prime Number Sieve – Fun With Math</title>
    <link rel="stylesheet" href="../../css/style.css" />
    <link rel="stylesheet" href="../../css/experiments-basic-primes.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>Prime Number Sieve</h1>
      <p>Watch the Sieve of Eratosthenes eliminate composites in real time.</p>
    </div>

    <div class="experiment-layout">
      <div>
        <div id="statsBar">
          <span>Primes found: <strong id="primeCount">—</strong></span>
          <span>Current factor: <strong id="currentFactor">—</strong></span>
          <span>Step: <strong id="stepDisplay">—</strong></span>
        </div>
        <div id="grid"></div>
      </div>

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

        <label>
          Limit (n): <span id="limitLabel">200</span>
          <input type="range" id="limitRange" min="20" max="400" step="10" value="200" />
        </label>

        <label>
          Animation Speed
          <select id="speed">
            <option value="600">Slow</option>
            <option value="250" selected>Medium</option>
            <option value="80">Fast</option>
            <option value="20">Very Fast</option>
          </select>
        </label>

        <div style="display: flex; gap: 0.5rem; flex-wrap: wrap">
          <button class="btn btn-primary" id="startBtn">▶ Start</button>
          <button class="btn btn-secondary" id="resetBtn">↺ Reset</button>
        </div>

        <div class="info-box">
          <h4>Primes</h4>
          <div id="primeList">—</div>
        </div>

        <div class="info-box">
          <h4>Algorithm</h4>
          <ol style="padding-left: 1.2rem; line-height: 2">
            <li>List integers 2 … n</li>
            <li>Mark 2 as prime; cross out multiples</li>
            <li>Find next unmarked number; repeat</li>
            <li>All remaining numbers are prime</li>
          </ol>
        </div>
      </aside>
    </div>

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

    <script src="../../js/experiments-basic-primes.js"></script>
  </body>
</html>