数据结构C语言算法（顺序队列的创建、入队、出队、销毁等操作）

seqQueue.h

#ifndef _SEQ_QUEUE_H_ #define _SEQ_QUEUE_H_ #include <stdio.h> #include <stdlib.h> typedef int DataType; typedef struct list { DataType *pBase; int front; int rear; }SeqQueue; #define SEQ_QUEUE_MAX_SIZE 10 extern SeqQueue *createSeqQueue(); extern int isFullSeqQueue(SeqQueue *pList); extern int isEmptySeqQueue(SeqQueue *pList); extern void showSeqQueue(SeqQueue *pList); extern int enterSeqQueue(SeqQueue *pList,DataType data); extern int outSeqQueue(SeqQueue *pList,DataType *poutdata); extern int getLenthSeqQueue(SeqQueue * pList); extern void destroySeqQueue(SeqQueue **pList); #endif 

seqQueue.c

 #include "seqQueue.h" /*创建顺序队列*/ SeqQueue *createSeqQueue() { SeqQueue *pList = malloc(sizeof(SeqQueue)); if(NULL == pList) { perror("createSeqQueue malloc error\n"); return NULL; } pList->front = 0; pList->rear = 0; pList->pBase = malloc(sizeof(DataType) * SEQ_QUEUE_MAX_SIZE); if(NULL == pList->pBase) { perror("pBase malloc error!\n"); return NULL; } return pList; } /*判断是否为满队列*/ int isFullSeqQueue(SeqQueue *pList) { return (pList->rear + 1) % SEQ_QUEUE_MAX_SIZE == pList->front; } /*判断是否为空队列*/ int isEmptySeqQueue(SeqQueue *pList) { return pList->front == pList->rear; } /*遍历*/ void showSeqQueue(SeqQueue *pList) { int i = 0; i = pList->front; while(i != pList->rear) { printf("%d ",pList->pBase[i]); i = (i+1) % SEQ_QUEUE_MAX_SIZE; } printf("\n"); } /*入队*/ int enterSeqQueue(SeqQueue *pList,DataType data) { if(isFullSeqQueue(pList)) { return 0; } pList->pBase[pList->rear] = data; pList->rear = (pList->rear + 1) % SEQ_QUEUE_MAX_SIZE; return 0; } /*出队*/ int outSeqQueue(SeqQueue *pList,DataType *poutdata) { if(isEmptySeqQueue(pList)) { return 0; } if(poutdata != NULL) { *poutdata = pList->pBase[pList->front]; } pList->front = (pList->front + 1) % SEQ_QUEUE_MAX_SIZE; return 0; } /*获取队列长度*/ int getLenthSeqQueue(SeqQueue * pList) { return (pList->rear - pList->front + SEQ_QUEUE_MAX_SIZE) % SEQ_QUEUE_MAX_SIZE; } /*销毁队列*/ void destroySeqQueue(SeqQueue **pList) { free((*pList)->pBase); free(*pList); *pList = NULL; } 

main.c

#include "seqQueue.h" int main(int argc, const char *argv[]) { SeqQueue *pList = NULL; pList = createSeqQueue(); int i = 0; for(i = 0;i < 10;i++) { enterSeqQueue(pList,i); } showSeqQueue(pList); outSeqQueue(pList,NULL); showSeqQueue(pList); enterSeqQueue(pList,9); showSeqQueue(pList); return 0; } 

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