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POProgram to print Sierpinski triangle
 

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  1. POProgram to print Sierpinski triangle
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    <p>i was just looking Wikipedia pages and i found this <a href="http://en.wikipedia.org/wiki/Sierpinski_triangle" rel="nofollow">Sierpinski triangle</a></p> <p>i want to create this triangle by <code>java</code>,<code>c</code>,<code>scala</code> etc.</p> <pre><code> 1 111 11111 1111111 111111111 11111111111 1111111111111 111111111111111 1 1 111 111 11111 11111 1111111 1111111 111111111 111111111 11111111111 11111111111 1111111111111 1111111111111 111111111111111 111111111111111 1 1 111 111 11111 11111 1111111 1111111 111111111 111111111 11111111111 11111111111 1111111111111 1111111111111 111111111111111 111111111111111 1 1 1 1 111 111 111 111 11111 11111 11111 11111 1111111 1111111 1111111 1111111 111111111 111111111 111111111 111111111 11111111111 11111111111 11111111111 11111111111 1111111111111 1111111111111 1111111111111 1111111111111 111111111111111 111111111111111 111111111111111 111111111111111 </code></pre> <p>i just create simple program like we create simple pattern in <code>c</code> i wrote this in <code>scala</code> </p> <pre><code>def ft(n: Int) = { for (i &lt;- 1 to n) { for (j &lt;- n to i by -1) { print(" ") } for (k &lt;- 1 to 2 * i - 1) { print("1") } print("\n") } } </code></pre> <p>to print this</p> <pre><code> 1 111 11111 1111111 111111111 </code></pre> <p>and this :</p> <pre><code>def triangle = { for (i &lt;- 1 to 5) { for (j &lt;- 1 to 5) { if (j &lt;= i) print("1") else print(" ") } for (j &lt;- 5 to 1 by -1) { if (j &lt;= i) print("1"); else print(" "); } print("\n"); } } </code></pre> <p>how to create this <strong>Sierpinski triangle</strong> ?</p> <p>just give me idea to solve this ?</p>
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    1. USRahul Kulhari
    1. USRahul Kulhari
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      1. POProgram to print Sierpinski triangle
      1. USNarendra Pathai
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    1. COYou have tagged 5 languages. In which language do you want the solution?
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      1. USAbhishek Bansal
    2. COi am just looking for `logic` to solve this triangle. You can provide in any language
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      1. USRahul Kulhari
    3. COThe logic is to use recursion. Each triangle can be split into four smaller ones. Leave the middle one blank and call yourself recursively on the other three. At some arbitrary point stop the recursion and use your routine to draw normal triangles.
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