You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

59 lines
794 B

#include <queue.h>
Status InitQueue(SqQueue *Q)
{
Q->front=0;
Q->rear=0;
return OK;
}
Status ClearQueue(SqQueue *Q)
{
Q->front=Q->rear=0;
return OK;
}
Status QueueEmpty(SqQueue *Q)
{
if(Q->front==Q->rear)
return TRUE;
else
return FALSE;
}
int QueueLength(SqQueue *Q)
{
return (Q->rear-Q->front+MAXSIZE)%MAXSIZE;
}
Status GetHead(SqQueue *Q,QElemType *e)
{
if(Q->front==Q->rear)
return ERROR;
*e=Q->data[Q->front];
return OK;
}
Status EnQueue(SqQueue *Q,QElemType e)
{
if ((Q->rear+1)%MAXSIZE == Q->front)
return ERROR;
Q->data[Q->rear]=e;
Q->rear=(Q->rear+1)%MAXSIZE;
return OK;
}
Status DeQueue(SqQueue *Q,QElemType *e)
{
if (Q->front == Q->rear)
return ERROR;
*e=Q->data[Q->front];
Q->front=(Q->front+1)%MAXSIZE;
return OK;
}