Sorting algorithms/Cocktail sort with shifting bounds: Difference between revisions
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=={{header|Phix}}== |
=={{header|Phix}}== |
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Averages 7 or 8% better than [[Sorting_algorithms/Cocktail_sort#Phix]] which already shifted the bounds, however this shifts >1 (sometimes). |
Averages 7 or 8% better than [[Sorting_algorithms/Cocktail_sort#Phix]] which already shifted the bounds, however this shifts >1 (sometimes). |
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<lang Phix> |
<!--<lang Phix>(phixonline)--> |
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<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span> |
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integer beginIdx = 1, |
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endIdx = length(s)-1 |
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<span style="color: #008080;">function</span> <span style="color: #000000;">cocktailShakerSort</span><span style="color: #0000FF;">(</span><span style="color: #004080;">sequence</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">)</span> |
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while beginIdx <= endIdx do |
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<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">deep_copy</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)</span> |
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integer newBeginIdx = endIdx, |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">beginIdx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">1</span><span style="color: #0000FF;">,</span> |
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newEndIdx = beginIdx |
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<span style="color: #000000;">endIdx</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)-</span><span style="color: #000000;">1</span> |
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for ii=beginIdx to endIdx do |
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<span style="color: #008080;">while</span> <span style="color: #000000;">beginIdx</span> <span style="color: #0000FF;"><=</span> <span style="color: #000000;">endIdx</span> <span style="color: #008080;">do</span> |
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if s[ii]>s[ii+1] then |
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<span style="color: #004080;">integer</span> <span style="color: #000000;">newBeginIdx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">endIdx</span><span style="color: #0000FF;">,</span> |
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{s[ii+1],s[ii]} = {s[ii], s[ii+1]} |
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<span style="color: #000000;">newEndIdx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">beginIdx</span> |
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newEndIdx = ii |
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<span style="color: #008080;">for</span> <span style="color: #000000;">ii</span><span style="color: #0000FF;">=</span><span style="color: #000000;">beginIdx</span> <span style="color: #008080;">to</span> <span style="color: #000000;">endIdx</span> <span style="color: #008080;">do</span> |
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end if |
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<span style="color: #004080;">object</span> <span style="color: #000000;">si</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">ii</span><span style="color: #0000FF;">],</span> |
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end for |
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<span style="color: #000000;">sn</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">ii</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> |
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⚫ | |||
<span style="color: #008080;">if</span> <span style="color: #000000;">si</span><span style="color: #0000FF;">></span><span style="color: #000000;">sn</span> <span style="color: #008080;">then</span> |
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endIdx = newEndIdx - 1 |
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<span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">ii</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">sn</span> |
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for ii=endIdx to beginIdx by -1 do |
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<span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">ii</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;">si</span> |
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if s[ii]>s[ii+1] then |
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<span style="color: #000000;">newEndIdx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">ii</span> |
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{s[ii+1],s[ii]} = {s[ii],s[ii+1]} |
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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newBeginIdx = ii |
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<span style="color: #008080;">end</span> <span style="color: #008080;">for</span> |
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end if |
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⚫ | |||
end for |
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<span style="color: #000000;">endIdx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">newEndIdx</span> <span style="color: #0000FF;">-</span> <span style="color: #000000;">1</span> |
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⚫ | |||
<span style="color: #008080;">for</span> <span style="color: #000000;">ii</span><span style="color: #0000FF;">=</span><span style="color: #000000;">endIdx</span> <span style="color: #008080;">to</span> <span style="color: #000000;">beginIdx</span> <span style="color: #008080;">by</span> <span style="color: #0000FF;">-</span><span style="color: #000000;">1</span> <span style="color: #008080;">do</span> |
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beginIdx = newBeginIdx + 1 |
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<span style="color: #004080;">object</span> <span style="color: #000000;">si</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">ii</span><span style="color: #0000FF;">],</span> |
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end while |
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<span style="color: #000000;">sn</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">ii</span><span style="color: #0000FF;">+</span><span style="color: #000000;">1</span><span style="color: #0000FF;">]</span> |
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return s |
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<span style="color: #008080;">if</span> <span style="color: #000000;">si</span><span style="color: #0000FF;">></span><span style="color: #000000;">sn</span> <span style="color: #008080;">then</span> |
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end function |
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<span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">ii</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">sn</span> |
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sequence s = shuffle(tagset(12)) ?{s,cocktailShakerSort(s)} |
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<span style="color: #000000;">s</span><span style="color: #0000FF;">[</span><span style="color: #000000;">ii</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;">si</span> |
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s = {"one","two","three","four"} ?{s,cocktailShakerSort(s)}</lang> |
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<span style="color: #000000;">newBeginIdx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">ii</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">if</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">for</span> |
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⚫ | |||
<span style="color: #000000;">beginIdx</span> <span style="color: #0000FF;">=</span> <span style="color: #000000;">newBeginIdx</span> <span style="color: #0000FF;">+</span> <span style="color: #000000;">1</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">while</span> |
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<span style="color: #008080;">return</span> <span style="color: #000000;">s</span> |
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<span style="color: #008080;">end</span> <span style="color: #008080;">function</span> |
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<span style="color: #004080;">sequence</span> <span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">shuffle</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">tagset</span><span style="color: #0000FF;">(</span><span style="color: #000000;">12</span><span style="color: #0000FF;">))</span> <span style="color: #0000FF;">?{</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span><span style="color: #000000;">cocktailShakerSort</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)}</span> |
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<span style="color: #000000;">s</span> <span style="color: #0000FF;">=</span> <span style="color: #0000FF;">{</span><span style="color: #008000;">"one"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"two"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"three"</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"four"</span><span style="color: #0000FF;">}</span> <span style="color: #0000FF;">?{</span><span style="color: #000000;">s</span><span style="color: #0000FF;">,</span><span style="color: #000000;">cocktailShakerSort</span><span style="color: #0000FF;">(</span><span style="color: #000000;">s</span><span style="color: #0000FF;">)}</span> |
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<!--</lang>--> |
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{{out}} |
{{out}} |
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<pre> |
<pre> |
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{{"one","two","three","four"},{"four","one","three","two"}} |
{{"one","two","three","four"},{"four","one","three","two"}} |
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</pre> |
</pre> |
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=={{header|Python}}== |
=={{header|Python}}== |
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<lang python> |
<lang python> |