105 lines
4.4 KiB
PHP
105 lines
4.4 KiB
PHP
<?php
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require_once (__DIR__ . '/../internals/base.php');
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require_once (__DIR__ . '/../internals/blog.php');
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require_once (__DIR__ . '/../internals/euler.php');
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require_once (__DIR__ . '/../extern/Parsedown.php');
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$problems = Euler::listAll();
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?>
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<div class="blogcontent bc_euler bc_markdown">
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<div style="position: relative;">
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<a href="https://github.com/Mikescher/Project-Euler_Befunge" style="position: absolute; top: 0; right: 0; border: 0;">
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<img src="/data/images/blog/github_band.png" alt="Fork me on GitHub" data-canonical-src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png">
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</a>
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</div>
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<div class="bc_header">
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<?php echo $post['date']; ?>
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</div>
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<div class="bc_data">
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<p><a href="https://projecteuler.net/problems"><img src="https://projecteuler.net/profile/Mikescher.png" /></a></p>
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<p>
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A lot of you probably know <a href="https://projecteuler.net/">Project Euler</a>.<br />
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For those who don't here a short explanation: Project Euler is a collection of mathematical/programming problems.
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Most problems consist of finding a single number and are solved by writing a program in the programming language of your choice.
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</p>
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<p>
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Most people solve these by using normal languages like C, Java, Phyton, Haskell etc.
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But you can also go a step further and try solving it with a little bit more exotic languages.
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</p>
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<p>
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So here are my solutions written in <a href="http://esolangs.org/wiki/Befunge">Befunge</a>
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</p>
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<blockquote>
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<p>
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<strong>Note:</strong><br />
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Similar to most Befunge content on this site I only used the Befunge-93 instruction-set but ignored the 80x25 size restriction.<br />
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Still I tries to keep the programs in the Befunge-93 grid size, but that wasn't possible for all. So I guess some programs are <i>technically</i> Befunge-98.
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</p>
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</blockquote>
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<p>
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I have a included javascript runner here, but for one I only enabled it for programs of reasonable sizes (a few soutions had source files in the megabyte range).<br/>
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And also it's not the fastest interpreter and some solution take quite a while to finish.<br/>
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I recommend using <a href="/programs/view/BefunUtils">BefunExec</a>. I specially made that interpreter for this project. It can run befunge code with around 6.5 MHz <i>(on my machine)</i>
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</p>
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<div class="mdtable_container">
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<table id="PEB_tableProblems" class="mdtable">
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<thead>
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<tr>
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<th>Number</th> <th>Title</th> <th>Time</th> <th>Size</th> <th>Solution (hover to reveal)</th>
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</tr>
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</thead>
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<tbody>
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<?php
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foreach ($problems as $problem)
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{
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echo '<tr class="PEB_tablerowProblems">' . "\r\n";
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echo '<td class="PEB_tablecellProblems PEB_TC_Number">';
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echo '<a href="' . $problem['url'] . '">';
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echo $problem['number'];
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echo '</a>';
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echo '</td>' . "\r\n";
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echo '<td class="PEB_tablecellProblems PEB_TC_Title">';
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echo '<a href="' . $problem['url'] . '">';
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echo htmlspecialchars($problem['title']);
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echo '</a>';
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echo '</td>' . "\r\n";
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echo '<td class="PEB_tablecellProblems PEB_TC_Rating">';
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echo '<a href="' . $problem['url'] . '">';
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echo '<div class="PEB_TC_Time PEB_TC_Timelevel_' . $problem['rating'] . '">';
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echo formatMilliseconds($problem['time']) . "</div></td>\r\n";
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echo '</div>';
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echo '</a>';
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echo '</td>' . "\r\n";
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echo '<td class="PEB_tablecellProblems PEB_TC_Size">';
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echo '<a href="' . $problem['url'] . '">';
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echo $problem['width'] . 'x' . $problem['height'];
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echo '<div class="PEB_TC_Size_' . ($problem['is93'] ? '93' : '98') . '">';
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echo ($problem['is93'] ? 'Bef-93' : 'Bef-98');
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echo '</div>';
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echo '</a>';
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echo '</td>' . "\r\n";
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echo '<td class="PEB_tablecellProblems PEB_TC_Value">';
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echo number_format($problem['value'], 0, null, ',');
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echo '</td>' . "\r\n";
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echo "</tr>\r\n";
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}
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?>
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</tbody>
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</table>
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</div>
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</div>
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</div>
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