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<H1>k-way merge sort</H1>
<P>
(algorithm)

<P>
<strong>Definition:</strong>
A <a href="mergesort.html" tppabs="http://hissa.nist.gov/dads/HTML/mergesort.html"><em>merge sort</em></a> which sorts a data stream using repeated merges.  It distributes the input into <em>k</em> streams by repeatedly reading a block of input which fits in memory, a <em>run</em>, sorting it, then writing it to the next stream.  It merges runs from the <em>k</em> streams into an output stream.  It then repeatedly distributes the runs in the output stream to the <em>k</em> streams and merges them until there is a single sorted output.
<P><strong>See also</strong>
<a href="balanckwayms.html" tppabs="http://hissa.nist.gov/dads/HTML/balanckwayms.html"><em>balanced k-way merge sort</em></a>, <a href="nonitermerge.html" tppabs="http://hissa.nist.gov/dads/HTML/nonitermerge.html"><em>noniterative merge</em></a>, <a href="balancmrgsrt.html" tppabs="http://hissa.nist.gov/dads/HTML/balancmrgsrt.html"><em>balanced merge sort</em></a>, <a href="nonbalncmsrt.html" tppabs="http://hissa.nist.gov/dads/HTML/nonbalncmsrt.html"><em>nonbalanced merge sort</em></a>.
<P><em>Note:
This is an <a href="externalsort.html" tppabs="http://hissa.nist.gov/dads/HTML/externalsort.html"><em>external sort</em></a>.</em>
<P>Author: <a href="terms.html#authorASK" tppabs="http://hissa.nist.gov/dads/terms.html#authorASK">ASK</a>
<H2>More information</H2>
<A HREF="javascript:if(confirm('http://www.nist.gov/cgi-bin/exit_nist.cgi?url=http://csc208.csudh.edu/makinde/csc353/ch6.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://csc208.csudh.edu/makinde/csc353/ch6.html'" tppabs="http://www.nist.gov/cgi-bin/exit_nist.cgi?url=http://csc208.csudh.edu/makinde/csc353/ch6.html">2-way, balanced, <em>k</em>-way, and polyphase merge sorts</a>

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Entry modified Thu May 27 11:12:44 1999.<BR>
HTML page formatted Wed Dec 22 09:35:40 1999.

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