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Ingy döt Net 2023-07-01 11:58:00 -04:00
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<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">siftDown</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">last</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">root</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span>
<span style="color: #008080;">while</span> <span style="color: #000000;">root</span><span style="color: #0000FF;">*</span><span style="color: #000000;">2</span><span style="color: #0000FF;"><=</span><span style="color: #000000;">last</span> <span style="color: #008080;">do</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">child</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">root</span><span style="color: #0000FF;">*</span><span style="color: #000000;">2</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">child</span><span style="color: #0000FF;"><</span><span style="color: #000000;">last</span> <span style="color: #008080;">and</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">child</span><span style="color: #0000FF;">]<</span><span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">child</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #008080;">then</span>
<span style="color: #000000;">child</span> <span style="color: #0000FF;">+=</span> <span style="color: #000000;">1</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #008080;">if</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">root</span><span style="color: #0000FF;">]>=</span><span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">child</span><span style="color: #0000FF;">]</span> <span style="color: #008080;">then</span> <span style="color: #008080;">exit</span> <span style="color: #008080;">end</span> <span style="color: #008080;">if</span>
<span style="color: #004080;">object</span> <span style="color: #000000;">tmp</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">root</span><span style="color: #0000FF;">]</span>
<span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">root</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">child</span><span style="color: #0000FF;">]</span>
<span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">child</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tmp</span>
<span style="color: #000000;">root</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">child</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">arr</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">heapify</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">,</span> <span style="color: #004080;">integer</span> <span style="color: #000000;">count</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">floor</span><span style="color: #0000FF;">(</span><span style="color: #000000;">count</span><span style="color: #0000FF;">/</span><span style="color: #000000;">2</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">while</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">></span><span style="color: #000000;">0</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">arr</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">siftDown</span><span style="color: #0000FF;">(</span><span style="color: #000000;">arr</span><span style="color: #0000FF;">,</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span><span style="color: #000000;">count</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">s</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">1</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">arr</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #008080;">function</span> <span style="color: #000000;">heap_sort</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">)</span>
<span style="color: #004080;">integer</span> <span style="color: #000000;">last</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">arr</span><span style="color: #0000FF;">)</span>
<span style="color: #000000;">arr</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">heapify</span><span style="color: #0000FF;">(</span><span style="color: #000000;">arr</span><span style="color: #0000FF;">,</span><span style="color: #000000;">last</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">while</span> <span style="color: #000000;">last</span><span style="color: #0000FF;">></span><span style="color: #000000;">1</span> <span style="color: #008080;">do</span>
<span style="color: #004080;">object</span> <span style="color: #000000;">tmp</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span>
<span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">last</span><span style="color: #0000FF;">]</span>
<span style="color: #000000;">arr</span><span style="color: #0000FF;">[</span><span style="color: #000000;">last</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">tmp</span>
<span style="color: #000000;">last</span> <span style="color: #0000FF;">-=</span> <span style="color: #000000;">1</span>
<span style="color: #000000;">arr</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">siftDown</span><span style="color: #0000FF;">(</span><span style="color: #000000;">arr</span><span style="color: #0000FF;">,</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #000000;">last</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">while</span>
<span style="color: #008080;">return</span> <span style="color: #000000;">arr</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">function</span>
<span style="color: #0000FF;">?</span><span style="color: #000000;">heap_sort</span><span style="color: #0000FF;">({</span><span style="color: #000000;">5</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"oranges"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"and"</span><span style="color: #0000FF;">,</span><span style="color: #000000;">3</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"apples"</span><span style="color: #0000FF;">})</span>
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