📄 bucketsort.html

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<H1>bucket sort</H1>
<P>
(algorithm)

<P>
<strong>Definition:</strong>
A <a href="distribsort.html" tppabs="http://hissa.nist.gov/dads/HTML/distribsort.html"><em>distribution sort</em></a> where input elements are initially  distributed to several <a href="bucket.html" tppabs="http://hissa.nist.gov/dads/HTML/bucket.html"><em>buckets</em></a> based on an interpolation of the element's <a href="key.html" tppabs="http://hissa.nist.gov/dads/HTML/key.html"><em>key</em></a>. Each bucket is sorted if necessary, and the buckets' contents are concatenated.
<P><strong>See also</strong>
<a href="rangesort.html" tppabs="http://hissa.nist.gov/dads/HTML/rangesort.html"><em>range sort</em></a>, <a href="radixsort.html" tppabs="http://hissa.nist.gov/dads/HTML/radixsort.html"><em>radix sort</em></a>, <a href="hashheap.html" tppabs="http://hissa.nist.gov/dads/HTML/hashheap.html"><em>hash heap</em></a>.
<P><em>Note:
The space required is one bucket for every few possible key value, but is <a href="bigOnotation.html" tppabs="http://hissa.nist.gov/dads/HTML/bigOnotation.html"><em>O(n)</em></a>. <P> Bucket sorts work well for data sets where the possible key values are known and relatively small and there are on average just a few elements per bucket so that the cost of sorting the contents of each bucket can be reduced toward zero.  The ideal result is possible if the order in each bucket is uninteresting or trivial, for instance, when each bucket holds a single key.  The buckets may be arranged so the concatenation phase is not needed, for instance, the buckets are contiguous parts of an array. <P> Bucket sorts can be <a href="stable.html" tppabs="http://hissa.nist.gov/dads/HTML/stable.html"><em>stable</em></a>.   <P> Also known as <a href="binsort.html" tppabs="http://hissa.nist.gov/dads/HTML/binsort.html"><em>bin sort</em></a>.</em>
<P>Author: <a href="terms.html#authorPEB" tppabs="http://hissa.nist.gov/dads/terms.html#authorPEB">PEB</a>
<H2>Implementation</H2>
<A HREF="javascript:if(confirm('http://www.nist.gov/cgi-bin/exit_nist.cgi?url=http://www.ee.uwa.edu.au/%7Eplsd210/ds/binsort.html  \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address.  \n\nDo you want to open it from the server?'))window.location='http://www.nist.gov/cgi-bin/exit_nist.cgi?url=http://www.ee.uwa.edu.au/%7Eplsd210/ds/binsort.html'" tppabs="http://www.nist.gov/cgi-bin/exit_nist.cgi?url=http://www.ee.uwa.edu.au/%7Eplsd210/ds/binsort.html">analysis, explanation, and code (C)</A>, and <A HREF="javascript:if(confirm('http://www.nist.gov/cgi-bin/exit_nist.cgi?url=http://www.dcc.uchile.cl/%7Eoalonso/handbook/algs/4/423.sort.c.html  \n\nThis file was not retrieved by Teleport Pro, because it is addressed on a domain or path outside the boundaries set for its Starting Address.  \n\nDo you want to open it from the server?'))window.location='http://www.nist.gov/cgi-bin/exit_nist.cgi?url=http://www.dcc.uchile.cl/%7Eoalonso/handbook/algs/4/423.sort.c.html'" tppabs="http://www.nist.gov/cgi-bin/exit_nist.cgi?url=http://www.dcc.uchile.cl/%7Eoalonso/handbook/algs/4/423.sort.c.html">(C)</A>.

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<p>
Entry modified Wed Apr  7 09:33:37 1999.<BR>
HTML page formatted Wed Dec 22 09:34:54 1999.

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