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yourtion
LearningMasteringAlgorithms-C
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pqueue.h
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LearningMasteringAlgorithms-C
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pqueue.h
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//
// pqueue.h
// Algorithms - priority queue
//
// Created by YourtionGuo on 05/05/2017.
// Copyright © 2017 Yourtion. All rights reserved.
//
#ifndef PQUEUE_H
#define PQUEUE_H
#include "heap.h"
/**
优先队列
*/
typedef Heap PQueue;
/**
初始化由参数 pqueue 所指定优先队列 - O(1)
@param pqueue 优先队列
@param compare 函数指针,用于比较两个成员优先级(高于返回 1,低于返回 -1,等于返回 0)
@param destroy 成员析构函数(free...)
*/
#define pqueue_init heap_init
/**
销毁由参数 pqueue 所指定优先队列 - O(n)
@param pqueue 优先队列
*/
#define pqueue_destroy heap_destroy
/**
在 pqueue 所指定的优先队列中插入一个元素 - O(lg n)
@param pqueue 优先队列
@param data 新成员
@return 插入成功返回0; 已经存在返回1;否则返回-1
*/
#define pqueue_insert heap_insert
/**
从优先队列 pqueue 中提取优先队列顶部的元素 - O(lg n)
@param pqueue 优先队列
@param data 已释放结点的存储数据
@return 释放成功,返回0;否则返回-1
*/
#define pqueue_extract heap_extract
/**
获取优先队列 pqueue 中优先级最高元素 - O(1)
@param pqueue 优先队列
@return 优先级最高的元素;如果队列为空,那么返回NULL
*/
#define pqueue_peek(pqueue) ((pqueue)->tree == NULL ? NULL : (pqueue)->tree[0])
/**
优先队列中的元素个数 - O(1)
@return 元素个数
*/
#define pqueue_size heap_size
#endif /* PQUEUE_H */
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