数据结构-8-栈和队列的实现

//栈
#include<stdio.h>
#include<Windows.h>
#include<assert.h>

typedef int DataType;

typedef struct Stack
{
    DataType* _array;
    size_t _top; //栈顶 
    size_t _end;
}Stack;

// 栈的实现接口 
void StackInit(Stack*s,size_t top);
void StackPush(Stack* s, DataType x);
void StackPop(Stack* s);
DataType StackTop(Stack* s);
size_t StackSize(Stack* s);
int StackEmpty(Stack* s);
void Stackcheck(Stack*s);
void StackPrint(Stack*s);

void StackPrint(Stack*s)
{
    size_t i = 0;
    while (i < s->_top)
    {
        printf("%d ", s->_array[i]);
        i++;
    }
}
void Stackcheck(Stack*s)
{
    if (s->_top >= s->_end)
    {
        DataType*array = (DataType*)realloc(s,sizeof(DataType)*2);
        assert(array);
        s->_array = array;
        s->_end = s->_end * 2;
    }
}
void StackInit(Stack*s,size_t end)
{
    assert(s&&end > 0);
    s->_array = (DataType*)malloc(end*sizeof(DataType));
    assert(s->_array);

    s->_top = 0;
    s->_end = end;
}

void StackPush(Stack* s, DataType x)
{
    Stackcheck(s);
    s->_array[s->_top] = x;
    s->_top++;
}

void StackPop(Stack* s)
{
    s->_array[s->_top - 1] = 0;
    s->_top--;
}

DataType StackTop(Stack* s)
{
    return s->_array[s->_top-1];
}

size_t StackSize(Stack* s)
{
    return s->_top;
}

int StackEmpty(Stack* s)
{
    if (s->_top == 0)
        return 1;
    else
        return 0;
}

//队列
#ifndef queue_h
#define queue_h

#include<stdio.h>
#include<Windows.h>
#include<assert.h>
typedef int QDataType;

typedef struct QueueNode
{
    QDataType _data;
    struct QueueNode* _next;
}QueueNode;

typedef struct Queue
{
    QueueNode* _head;
    QueueNode* _tail;
}Queue;

void QueueInit(Queue* q);
QueueNode*BuyQueueNode(Queue*q,QDataType x);
void QueuePush(Queue* q, QDataType x);
void QueuePrint(Queue*q);
void QueuePop(Queue* q);
QDataType QueueFront(Queue* q);
QDataType QueueBack(Queue* q);
size_t QueueSize(Queue* q);
int QueueEmpty(Queue* q);


QueueNode* BuyQueueNode(Queue*q,QDataType x)
{
    QueueNode*newnode = (QueueNode*)malloc(sizeof(QueueNode));
    assert(newnode);

    newnode->_data = x;
    newnode->_next = NULL;

    return newnode;
}
void QueueInit(Queue* q)
{
    assert(q);
    q->_tail = NULL;
    q->_head = NULL;
}
void QueuePush(Queue* q, QDataType x)
{
    if (q->_head == NULL)
    {
        q->_head = q->_tail = BuyQueueNode(q,x);
    }
    else
    {
        q->_tail->_next = BuyQueueNode(q, x);
        q->_tail = q->_tail->_next;
    }
}
void QueuePrint(Queue*q)
{
    QueueNode*cur = q->_head;
    while (cur!=q->_tail)
    {
        printf("%d ", cur->_data);
        cur = cur->_next;
    }
    printf("%d\n",q->_tail->_data);
}
void QueuePop(Queue* q)
{
    QueueNode*next = q->_head->_next;
    if (q->_head == NULL)
        return;
    else
    {
        free(q->_head);
        q->_head = next;
        if (q->_head == NULL)//如果只有一个节点
            q->_tail = NULL;
    }
}
QDataType QueueFront(Queue* q)
{
    assert(q);
    if (q->_head != NULL)
        return q->_head->_data;
    else
        return 0;
}
QDataType QueueBack(Queue* q)
{
    assert(q);
    if (q->_tail != NULL)
        return q->_tail->_data;
    else
        return 0;
}
size_t QueueSize(Queue* q)
{
    if (q->_head== NULL)
        return 0;
    else{
        QueueNode*cur = q->_head;
        int count = 1;
        while (cur!=q->_tail)
        {
            count++;
            cur = cur->_next;
        }
        return count;
    }
}
int QueueEmpty(Queue* q)
{
    if (q->_head == NULL)
        return 0;
    else
        return 1;
}

#endif

//测试
//#include"stack.h"
//
//void test();
//
//void test()
//{
//  Stack s;
//  StackInit(&s,30);
//  StackPush(&s, 0);
//  StackPush(&s, 1);
//  StackPush(&s, 2);
//  StackPush(&s, 3);
//  StackPush(&s, 4);
//  StackPrint(&s);
//  printf("\n");
//  printf("%d\n",StackEmpty(&s));
//  printf("%d\n", StackSize(&s));
//  printf("%d\n", StackTop(&s));
//}
//int main()
//{
//  test();
//  system("pause");
//  return 0;
//}

#include"queue.h"


void test()
{
    Queue q;
    QueueInit(&q);
    QueuePush(&q, 1);
    QueuePush(&q, 2);
    QueuePush(&q, 3);
    QueuePush(&q, 4);
    QueuePop(&q);
    QueuePrint(&q);
}
int main()
{
    test();
    system("pause");
    return 0;
}