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It is provided "as is" without express or implied warranty. -- --><Head><Title>is_sorted</Title><!-- Generated by htmldoc --></HEAD><BODY BGCOLOR="#ffffff" LINK="#0000ee" TEXT="#000000" VLINK="#551a8b" ALINK="#ff0000"> <IMG SRC="CorpID.gif" ALT="SGI" HEIGHT="43" WIDTH="151"> <!--end header--><BR Clear><H1>is_sorted</H1><Table CellPadding=0 CellSpacing=0 width=100%><TR><TD Align=left><Img src = "algorithms.gif" Alt="" WIDTH = "194" HEIGHT = "38" ></TD><TD Align=right><Img src = "function.gif" Alt="" WIDTH = "194" HEIGHT = "38" ></TD></TR><TR><TD Align=left VAlign=top><b>Category</b>: algorithms</TD><TD Align=right VAlign=top><b>Component type</b>: function</TD></TR></Table><h3>Prototype</h3><tt>Is_sorted</tt> is an overloaded name; there are actually two <tt>is_sorted</tt>functions.<pre>template <class <A href="ForwardIterator.html">ForwardIterator</A>>bool is_sorted(ForwardIterator first, ForwardIterator last)template <class <A href="ForwardIterator.html">ForwardIterator</A>, class <A href="StrictWeakOrdering.html">StrictWeakOrdering</A>>bool is_sorted(ForwardIterator first, ForwardIterator last, StrictWeakOrdering comp)</pre> <h3>Description</h3><tt>Is_sorted</tt> returns <tt>true</tt> if the range <tt>[first, last)</tt> is sortedin ascending order, and <tt>false</tt> otherwise.<P>The two versions of <tt>is_sorted</tt> differ in how they define whether oneelement is less than another. The first version comparesobjects using <tt>operator<</tt>, and the second compares objects using the<A href="functors.html">function object</A> <tt>comp</tt>. Thefirst version of <tt>is_sorted</tt> returns <tt>true</tt> if and only if, for everyiterator <tt>i</tt> in the range <tt>[first, last - 1)</tt>, <tt>*(i + 1) < *i</tt> is<tt>false</tt>. The second version returns <tt>true</tt> if and only if,for every iterator <tt>i</tt> in the range <tt>[first, last - 1)</tt>, <tt>comp(*(i + 1),*i)</tt> is <tt>false</tt><h3>Definition</h3>Defined in <A href="algo.h">algo.h</A>.<h3>Requirements on types</h3>For the first version:<UL><LI><tt>ForwardIterator</tt> is a model of <A href="ForwardIterator.html">Forward Iterator</A>.<LI><tt>ForwardIterator</tt>'s value type is a model of <A href="LessThanComparable.html">LessThan Comparable</A>.<LI>The ordering on objects of <tt>ForwardIterator</tt>'s value type is a <i>strict weak ordering</i>, as defined in the <A href="LessThanComparable.html">LessThan Comparable</A> requirements.</UL>For the second version:<UL><LI><tt>ForwardIterator</tt> is a model of <A href="ForwardIterator.html">Forward Iterator</A>.<LI><tt>StrictWeakOrdering</tt> is a model of <A href="StrictWeakOrdering.html">Strict Weak Ordering</A>.<LI><tt>ForwardIterator</tt>'s value type is convertible to <tt>StrictWeakOrdering</tt>'s argument type.</UL><h3>Preconditions</h3><UL><LI><tt>[first, last)</tt> is a valid range.</UL><h3>Complexity</h3>Linear. Zero comparisons if <tt>[first, last)</tt> is an empty range,otherwise at most <tt>(last - first) - 1</tt> comparisons.<h3>Example</h3><pre>int A[] = {1, 4, 2, 8, 5, 7};const int N = sizeof(A) / sizeof(int);assert(!is_sorted(A, A + N));<A href="sort.html">sort</A>(A, A + N);assert(is_sorted(A, A + N));</pre><h3>Notes</h3><h3>See also</h3><tt><A href="sort.html">sort</A></tt>,<tt><A href="stable_sort.html">stable_sort</A></tt>,<tt><A href="partial_sort.html">partial_sort</A></tt>,<tt><A href="partial_sort_copy.html">partial_sort_copy</A></tt>,<tt><A href="sort_heap.html">sort_heap</A></tt>,<tt><A href="binary_search.html">binary_search</A></tt>,<tt><A href="lower_bound.html">lower_bound</A></tt>,<tt><A href="upper_bound.html">upper_bound</A></tt>,<tt><A href="less.html">less</A><T></tt>,<A href="StrictWeakOrdering.html">StrictWeakOrdering</A>,<A href="LessThanComparable.html">LessThan Comparable</A><!--start footer--> <HR SIZE="6"><A href="http://www.sgi.com/"><IMG SRC="surf.gif" HEIGHT="54" WIDTH="54" ALT="[Silicon Surf]"></A><A HREF="index.html"><IMG SRC="stl_home.gif" HEIGHT="54" WIDTH="54" ALT="[STL Home]"></A><BR><FONT SIZE="-2"><A href="http://www.sgi.com/Misc/sgi_info.html" TARGET="_top">Copyright © 1999 Silicon Graphics, Inc.</A> All Rights Reserved.</FONT><FONT SIZE="-3"><a href="http://www.sgi.com/Misc/external.list.html" TARGET="_top">TrademarkInformation</A></FONT><P></BODY></HTML> ⌨️ 快捷键说明
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