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<title>GNU Scientific Library &ndash; Reference Manual: Exchanging elements</title>

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<p>
Next: <a href="Vector-operations.html#Vector-operations" accesskey="n" rel="next">Vector operations</a>, Previous: <a href="Copying-vectors.html#Copying-vectors" accesskey="p" rel="previous">Copying vectors</a>, Up: <a href="Vectors.html#Vectors" accesskey="u" rel="up">Vectors</a> &nbsp; [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Exchanging-elements-1"></a>
<h4 class="subsection">8.3.7 Exchanging elements</h4>

<p>The following function can be used to exchange, or permute, the elements
of a vector.
</p>
<dl>
<dt><a name="index-gsl_005fvector_005fswap_005felements"></a>Function: <em>int</em> <strong>gsl_vector_swap_elements</strong> <em>(gsl_vector * <var>v</var>, size_t <var>i</var>, size_t <var>j</var>)</em></dt>
<dd><p>This function exchanges the <var>i</var>-th and <var>j</var>-th elements of the
vector <var>v</var> in-place.
</p></dd></dl>

<dl>
<dt><a name="index-gsl_005fvector_005freverse"></a>Function: <em>int</em> <strong>gsl_vector_reverse</strong> <em>(gsl_vector * <var>v</var>)</em></dt>
<dd><p>This function reverses the order of the elements of the vector <var>v</var>.
</p></dd></dl>





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