队列的基本操作
structComm.h//定义各种结构的头文件

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#ifndef STRUCTCOMM_H_INCLUDED
#define STRUCTCOMM_H_INCLUDED
#undef NULL
#ifdef __cplusplus
#define NULL 0
#else
#define NULL ((void *)0)
#endif
struct list_head
{
struct list_head *next;
struct list_head *prev;
};
typedef struct tag_myTree
{
int data;
struct tag_myTree* pLeft;
struct tag_myTree* pRight;
}myTree;
typedef struct tag_myStack
{
int data;
myTree *pTree;
struct list_head stStack;
}myStack;
typedef struct tag_myQue
{
int data;
myTree *pTree;
struct list_head stQue;
}myQue;
#endif // STRUCTCOMM_H_INCLUDEDmyQue.h
#ifndef MYQUE_H_INCLUDED #define MYQUE_H_INCLUDED #include "structComm.h" myQue* getNewNode(); void initQue(myQue *pRoot); void destoryQue(myQue *pRoot); int getQueLen(myQue *pRoot); int isQueEmpty(myQue *pRoot); void enQue(myQue *pRoot, myQue *pNew); myQue* deQue(myQue *pRoot); #endif // MYQUE_H_INCLUDED
myQue.c
#include "myQue.h"
#include "myList.h"
myQue* getNewQueNode()
{
myQue *pTmp = NULL;
pTmp = (myQue *)malloc(sizeof(myQue));
if (NULL == pTmp)
{
return NULL;
}
pTmp->data = 0;
pTmp->pTree = NULL;
INIT_LIST_HEAD(&(pTmp->stQue));
return pTmp;
}
void initQue(myQue *pRoot)
{
pRoot->data = 0;
pRoot->pTree = NULL;
INIT_LIST_HEAD(&(pRoot->stQue));
return;
}
void destoryQue(myQue *pRoot)
{
struct list_head *pos = NULL;
struct list_head *n = NULL;
myQue *pstQue = NULL;
list_for_each_safe(pos, n, &(pRoot->stQue))
{
list_del(pos);
pstQue = list_entry(pos, myQue, stQue);
free(pstQue);
pos = n;
}
return;
}
int getQueLen(myQue *pRoot)
{
int len = 0;
struct list_head *pos = NULL;
list_for_each(pos, &(pRoot->stQue))
{
len++;
}
return len;
}
int isQueEmpty(myQue *pRoot)
{
return list_empty(&(pRoot->stQue));
}
void enQue(myQue *pRoot, myQue *pNew)
{
list_add(&(pNew->stQue), &(pRoot->stQue));
}
myQue* deQue(myQue *pRoot)
{
myQue *pstQue = NULL;
struct list_head *pTmp = NULL;
if (!isQueEmpty(pRoot))
{
pTmp = (pRoot->stQue).prev;
list_del((pRoot->stQue).prev);
pstQue = list_entry(pTmp, myQue, stQue);
return pstQue;
}
return NULL;
}main.c
#include#include "myQue.h" myQue g_stQueRoot; //栈的头节点,不存储数据 int main() { int i = 0; myQue *pNewNode = NULL; initQue(&g_stQueRoot); //初始化之前要保证头队列为空 printf("is empty:\t%d\n", isQueEmpty(&g_stQueRoot)); for (i = 0; i < 5; i++) { pNewNode = getNewNode(); if (NULL == pNewNode) { exit(0); } pNewNode->data = i; enQue(&g_stQueRoot, pNewNode); } printf("is empty:\t%d\n", isQueEmpty(&g_stQueRoot)); printf("que len:\t%d\n", getQueLen(&g_stQueRoot)); printf("de:\t"); for (i = 0; i < 5; i++) { pNewNode = deQue(&g_stQueRoot); printf("%d\t", pNewNode->data); } pNewNode = deQue(&g_stQueRoot); if (NULL == pNewNode) { printf("\ncan not de\n"); } return 0; }
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