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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <meta name="generator" content="HTML Tidy for Linux/x86 (vers 1st October 2002), see www.w3.org"> <title>C++ Priority Queues</title> </head> <body bgcolor="#ffffff"> <table width="100%" bgcolor="#eeeeff"> <tr> <td><a href="index.html">cppreference.com</a> -> <a href="cpppriorityqueue.html">C++ Priority Queues</a> -> Details</td> </tr> </table> <h1>C++ Priority Queues</h1> <hr> <h2><a name="empty">empty</a></h2> <i>Syntax:</i> <table bgcolor="#ccccff"> <tr> <td><pre> bool empty();</pre> </td> </tr> </table> <p>The empty() function returns <strong>true</strong> if the current priority queue is empty, and <strong>false</strong> otherwise.</p> <hr> <h2><a name="pop">pop</a></h2> <i>Syntax:</i> <table bgcolor="#ccccff"> <tr> <td><pre> void pop();</pre> </td> </tr> </table> <p>The function pop() discards the first element in the current priority queue.</p> <hr> <h2><a name="push">push</a></h2> <i>Syntax:</i> <table bgcolor="#ccccff"> <tr> <td><pre> void push( const <a href="containers.html">TYPE</a> &val );</pre> </td> </tr> </table> <p>The function push() adds an element to the current priority queue.</p> <hr> <h2><a name="size">size</a></h2> <i>Syntax:</i> <table bgcolor="#ccccff"> <tr> <td><pre> size_type size();</pre> </td> </tr> </table> <p>The size() function returns the number of things in the current priority queue.</p> <hr> <h2><a name="top">top</a></h2> <i>Syntax:</i> <table bgcolor="#ccccff"> <tr> <td><pre> <a href="containers.html">TYPE</a> &top();</pre> </td> </tr> </table> <p>The top() function returns a reference to the element in the queue with the highest priority. Note that only <a href="#pop">pop()</a> removes an element.</p> </body></html>⌨️ 快捷键说明
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