队列的基本操作有初始化队列,判队列是否为空,入队,出队
栈可分为两种存储结构:顺序队和链队。
顺序队
代码语言:txt复制/* 顺序队结构 */
typedef struct
{
ElemType data[MAXSIZE];
int front;
int rear;
} SqQueue;
顺序队四个要素:
(1)队空条件:qu.rear == qu.front;
(2)队满条件: (qu.rear 1) % MAXSIZE == qu.front;
(3)进队条件: qu.rear = (qu.rear 1) % MAXSIZE; qu.data[qu.rear] = data;
(4)出队条件: qu.front = (qu.front 1) % MAXSIZE; data = qu.data[qu.front];
顺序队基本操作
代码语言:javascript复制#include "stdafx.h"
#include <stdlib.h>
#define MAXSIZE 10
typedef int ElemType;
/* 顺序栈结构 */
typedef struct
{
ElemType data[MAXSIZE];
int front;
int rear;
} SqQueue;
void InitStack(SqQueue &qu)
{
qu.front = qu.rear = 0;
}
bool IsEmpty(SqQueue &qu)
{
return (qu.front == qu.rear);
}
int InQueue(SqQueue &qu, ElemType data)
{
if ((qu.rear 1) % MAXSIZE == qu.front)
{
return -1;
}
qu.data[qu.rear] = data;
qu.rear = (qu.rear 1) % MAXSIZE;
return 0;
}
int OutQueue(SqQueue &qu, ElemType &data)
{
if (qu.front == qu.rear)
{
return -1;
}
qu.front = (qu.front 1) % MAXSIZE;
data = qu.data[qu.front];
return 0;
}
void PrintQueue(SqQueue &qu)
{
int i = 0;
if (qu.front == qu.rear)
return;
i = qu.front;
while (i != qu.rear)
{
printf("%dt", qu.data[i]);
i = (i 1)%MAXSIZE;
}
printf("rn");
return;
}
int _tmain(int argc, _TCHAR* argv[])
{
ElemType array[] = {1, 2, 3, 4, 5, 6, 7, 8, 9};
int i = 0;
int data = 0;
SqQueue queue = { 0 };
InitStack(queue);
for (i = 0; i < sizeof(array)/sizeof(ElemType); i )
{
InQueue(queue, array[i]);
}
PrintQueue(queue);
OutQueue(queue, data);
OutQueue(queue, data);
PrintQueue(queue);
InQueue(queue, 11);
InQueue(queue, 12);
PrintQueue(queue);
return 0;
}