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<div class="section" title="next_permutation">
<div class="titlepage"><div><div><h5 class="title">
<a name="range.reference.algorithms.permutation.next_permutation"></a><a class="link" href="next_permutation.html" title="next_permutation">
next_permutation</a>
</h5></div></div></div>
<a name="range.reference.algorithms.permutation.next_permutation.prototype"></a><h6>
<a name="id2818407"></a>
<a class="link" href="next_permutation.html#range.reference.algorithms.permutation.next_permutation.prototype">Prototype</a>
</h6>
<p>
</p>
<pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalRange</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="identifier">next_permutation</span><span class="special">(</span><span class="identifier">BidirectionalRange</span><span class="special">&amp;</span> <span class="identifier">rng</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalRange</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="identifier">next_permutation</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">BidirectionalRange</span><span class="special">&amp;</span> <span class="identifier">rng</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Compare</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="identifier">next_permutation</span><span class="special">(</span><span class="identifier">BidirectionalRange</span><span class="special">&amp;</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">Compare</span> <span class="identifier">pred</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Compare</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="identifier">next_permutation</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">BidirectionalRange</span><span class="special">&amp;</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">Compare</span> <span class="identifier">pred</span><span class="special">);</span>
</pre>
<p>
</p>
<a name="range.reference.algorithms.permutation.next_permutation.description"></a><h6>
<a name="id2818759"></a>
<a class="link" href="next_permutation.html#range.reference.algorithms.permutation.next_permutation.description">Description</a>
</h6>
<p>
<code class="computeroutput"><span class="identifier">next_permutation</span></code> transforms
the range of elements <code class="computeroutput"><span class="identifier">rng</span></code>
into the lexicographically next greater permutation of the elements if
such a permutation exists. If one does not exist then the range is transformed
into the lexicographically smallest permutation and <code class="computeroutput"><span class="keyword">false</span></code>
is returned. <code class="computeroutput"><span class="keyword">true</span></code> is returned
when the next greater permutation is successfully generated.
</p>
<p>
The ordering relationship is determined by using <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;</span></code> in the non-predicate versions, and
by evaluating <code class="computeroutput"><span class="identifier">pred</span></code> in
the predicate versions.
</p>
<a name="range.reference.algorithms.permutation.next_permutation.definition"></a><h6>
<a name="id2818866"></a>
<a class="link" href="next_permutation.html#range.reference.algorithms.permutation.next_permutation.definition">Definition</a>
</h6>
<p>
Defined in the header file <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">range</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">permutation</span><span class="special">.</span><span class="identifier">hpp</span></code>
</p>
<a name="range.reference.algorithms.permutation.next_permutation.requirements"></a><h6>
<a name="id2818940"></a>
<a class="link" href="next_permutation.html#range.reference.algorithms.permutation.next_permutation.requirements">Requirements</a>
</h6>
<p>
<span class="bold"><strong>For the non-predicate versions:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>
is a model of the <a class="link" href="../../../concepts/bidirectional_range.html" title="Bidirectional Range">Bidirectional
Range</a> Concept.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>
is mutable.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>'s
value type is a model of the <code class="computeroutput"><span class="identifier">LessThanComparableConcept</span></code>.
</li>
<li class="listitem">
The ordering of objects of type <code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>'s
value type is a <span class="bold"><strong><span class="emphasis"><em>strict weak ordering</em></span></strong></span>,
as defined in the <code class="computeroutput"><span class="identifier">LessThanComparableConcept</span></code>
requirements.
</li>
</ul></div>
<p>
<span class="bold"><strong>For the predicate versions:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>
is a model of the <a class="link" href="../../../concepts/bidirectional_range.html" title="Bidirectional Range">Bidirectional
Range</a> Concept.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>
is mutable.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">Compare</span></code> is a model
of the <code class="computeroutput"><span class="identifier">StrictWeakOrderingConcept</span></code>.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>'s
value type is convertible to both of <code class="computeroutput"><span class="identifier">Compare</span></code>'s
argument types.
</li>
</ul></div>
<a name="range.reference.algorithms.permutation.next_permutation.complexity"></a><h6>
<a name="id2819175"></a>
<a class="link" href="next_permutation.html#range.reference.algorithms.permutation.next_permutation.complexity">Complexity</a>
</h6>
<p>
Linear. At most <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">rng</span><span class="special">)</span> <span class="special">/</span> <span class="number">2</span></code>
swaps.
</p>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003 -2010 Thorsten Ottosen, Neil Groves<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p>
</div></td>
</tr></table>
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<meta name="generator" content="DocBook XSL Stylesheets V1.75.1">
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<div class="section" title="prev_permutation">
<div class="titlepage"><div><div><h5 class="title">
<a name="range.reference.algorithms.permutation.prev_permutation"></a><a class="link" href="prev_permutation.html" title="prev_permutation">
prev_permutation</a>
</h5></div></div></div>
<a name="range.reference.algorithms.permutation.prev_permutation.prototype"></a><h6>
<a name="id2819257"></a>
<a class="link" href="prev_permutation.html#range.reference.algorithms.permutation.prev_permutation.prototype">Prototype</a>
</h6>
<p>
</p>
<pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalRange</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="identifier">prev_permutation</span><span class="special">(</span><span class="identifier">BidirectionalRange</span><span class="special">&amp;</span> <span class="identifier">rng</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalRange</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="identifier">prev_permutation</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">BidirectionalRange</span><span class="special">&amp;</span> <span class="identifier">rng</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Compare</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="identifier">prev_permutation</span><span class="special">(</span><span class="identifier">BidirectionalRange</span><span class="special">&amp;</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">Compare</span> <span class="identifier">pred</span><span class="special">);</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">BidirectionalRange</span><span class="special">,</span> <span class="keyword">class</span> <span class="identifier">Compare</span><span class="special">&gt;</span>
<span class="keyword">bool</span> <span class="identifier">prev_permutation</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">BidirectionalRange</span><span class="special">&amp;</span> <span class="identifier">rng</span><span class="special">,</span> <span class="identifier">Compare</span> <span class="identifier">pred</span><span class="special">);</span>
</pre>
<p>
</p>
<a name="range.reference.algorithms.permutation.prev_permutation.description"></a><h6>
<a name="id2819608"></a>
<a class="link" href="prev_permutation.html#range.reference.algorithms.permutation.prev_permutation.description">Description</a>
</h6>
<p>
<code class="computeroutput"><span class="identifier">prev_permutation</span></code> transforms
the range of elements <code class="computeroutput"><span class="identifier">rng</span></code>
into the lexicographically next smaller permutation of the elements if
such a permutation exists. If one does not exist then the range is transformed
into the lexicographically largest permutation and <code class="computeroutput"><span class="keyword">false</span></code>
is returned. <code class="computeroutput"><span class="keyword">true</span></code> is returned
when the next smaller permutation is successfully generated.
</p>
<p>
The ordering relationship is determined by using <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;</span></code> in the non-predicate versions, and
by evaluating <code class="computeroutput"><span class="identifier">pred</span></code> in
the predicate versions.
</p>
<a name="range.reference.algorithms.permutation.prev_permutation.definition"></a><h6>
<a name="id2819716"></a>
<a class="link" href="prev_permutation.html#range.reference.algorithms.permutation.prev_permutation.definition">Definition</a>
</h6>
<p>
Defined in the header file <code class="computeroutput"><span class="identifier">boost</span><span class="special">/</span><span class="identifier">range</span><span class="special">/</span><span class="identifier">algorithm</span><span class="special">/</span><span class="identifier">permutation</span><span class="special">.</span><span class="identifier">hpp</span></code>
</p>
<a name="range.reference.algorithms.permutation.prev_permutation.requirements"></a><h6>
<a name="id2819790"></a>
<a class="link" href="prev_permutation.html#range.reference.algorithms.permutation.prev_permutation.requirements">Requirements</a>
</h6>
<p>
<span class="bold"><strong>For the non-predicate versions:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>
is a model of the <a class="link" href="../../../concepts/bidirectional_range.html" title="Bidirectional Range">Bidirectional
Range</a> Concept.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>
is mutable.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>'s
value type is a model of the <code class="computeroutput"><span class="identifier">LessThanComparableConcept</span></code>.
</li>
<li class="listitem">
The ordering of objects of type <code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>'s
value type is a <span class="bold"><strong><span class="emphasis"><em>strict weak ordering</em></span></strong></span>,
as defined in the <code class="computeroutput"><span class="identifier">LessThanComparableConcept</span></code>
requirements.
</li>
</ul></div>
<p>
<span class="bold"><strong>For the predicate versions:</strong></span>
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>
is a model of the <a class="link" href="../../../concepts/bidirectional_range.html" title="Bidirectional Range">Bidirectional
Range</a> Concept.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>
is mutable.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">Compare</span></code> is a model
of the <code class="computeroutput"><span class="identifier">StrictWeakOrderingConcept</span></code>.
</li>
<li class="listitem">
<code class="computeroutput"><span class="identifier">BidirectionalRange</span></code>'s
value type is convertible to both of <code class="computeroutput"><span class="identifier">Compare</span></code>'s
argument types.
</li>
</ul></div>
<a name="range.reference.algorithms.permutation.prev_permutation.complexity"></a><h6>
<a name="id2820025"></a>
<a class="link" href="prev_permutation.html#range.reference.algorithms.permutation.prev_permutation.complexity">Complexity</a>
</h6>
<p>
Linear. At most <code class="computeroutput"><span class="identifier">distance</span><span class="special">(</span><span class="identifier">rng</span><span class="special">)</span> <span class="special">/</span> <span class="number">2</span></code>
swaps.
</p>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2003 -2010 Thorsten Ottosen, Neil Groves<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
</p>
</div></td>
</tr></table>
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