栈的的顺序实例SeqStack实现

Posted 2020-08-22 一步一个脚印

1.#include <stdio.h>
#include <stdlib.h>
#include "SeqStack.h"

/* run this program using the console pauser or add your own getch, system("pause") or input loop */

int main(int argc, char *argv[])
{
    SeqStack* stack = SeqStack_Create(20);
    int a[10];
    int i = 0;
    
    for(i=0; i<10; i++)
    {
        a[i] = i;
        
        SeqStack_Push(stack, a + i);
    }
    
    printf("Top: %d\n", *(int*)SeqStack_Top(stack));
    printf("Capacity: %d\n", SeqStack_Capacity(stack));
    printf("Length: %d\n", SeqStack_Size(stack));
    
    while( SeqStack_Size(stack) > 0 )
    {
        printf("Pop: %d\n", *(int*)SeqStack_Pop(stack));
    }
    
    SeqStack_Destroy(stack);
    
    return 0;
}

2.#include <stdio.h>
#include <malloc.h>
#include "SeqList.h"

typedef unsigned int TSeqListNode;

typedef struct _tag_SeqList
{
    int capacity;
    int length;
    TSeqListNode* node;
} TSeqList;
//创建栈
SeqList* SeqList_Create(int capacity) // O(1)
{
    TSeqList* ret = NULL;
    
    if( capacity >= 0 )
    {
        ret = (TSeqList*)malloc(sizeof(TSeqList) + sizeof(TSeqListNode) * capacity);
    }
    
    if( ret != NULL )
    {
        ret->capacity = capacity;
        ret->length = 0;
        ret->node = (TSeqListNode*)(ret + 1);
    }
    
    return ret;
}
//销毁栈
void SeqList_Destroy(SeqList* list) // O(1)
{
    free(list);
}
//清除栈
void SeqList_Clear(SeqList* list) // O(1)
{
    TSeqList* sList = (TSeqList*)list;
    
    if( sList != NULL )
    {
        sList->length = 0;
    }
}
//取出栈长度
int SeqList_Length(SeqList* list) // O(1)
{
    TSeqList* sList = (TSeqList*)list;
    int ret = -1;
    
    if( sList != NULL )
    {
        ret = sList->length;
    }
    
    return ret;
}

//取出栈的内存空间
int SeqList_Capacity(SeqList* list) // O(1)
{
    TSeqList* sList = (TSeqList*)list;
    int ret = -1;
    
    if( sList != NULL )
    {
        ret = sList->capacity;
    }
    
    return ret;
}
//压栈
int SeqList_Insert(SeqList* list, SeqListNode* node, int pos) // O(n)
{
    TSeqList* sList = (TSeqList*)list;
    int ret = (sList != NULL);
    int i = 0;
    
    ret = ret && (sList->length + 1 <= sList->capacity);
    ret = ret && (0 <= pos);
    
    if( ret )
    {
        if( pos >= sList->length )
        {
            pos = sList->length;
        }
        
        for(i=sList->length; i>pos; i--)
        {
            sList->node[i] = sList->node[i-1];
        }
        
        sList->node[i] = (TSeqListNode)node;
        
        sList->length++;
    }
    
    return ret;
}
//取出栈点元素
SeqListNode* SeqList_Get(SeqList* list, int pos) // O(1)
{
    TSeqList* sList = (TSeqList*)list;
    SeqListNode* ret = NULL;
    
    if( (sList != NULL) && (0 <= pos) && (pos < sList->length) )
    {
        ret = (SeqListNode*)(sList->node[pos]);
    }
    
    return ret;
}
//出栈
SeqListNode* SeqList_Delete(SeqList* list, int pos) // O(n)
{
    TSeqList* sList = (TSeqList*)list;
    SeqListNode* ret = SeqList_Get(list, pos);
    int i = 0;
    
    if( ret != NULL )
    {
        for(i=pos+1; i<sList->length; i++)
        {
            sList->node[i-1] = sList->node[i];
        }
        
        sList->length--;
    }
    
    return ret;
}

3.#ifndef _SEQLIST_H_
#define _SEQLIST_H_

typedef void SeqList;
typedef void SeqListNode;

SeqList* SeqList_Create(int capacity);

void SeqList_Destroy(SeqList* list);

void SeqList_Clear(SeqList* list);

int SeqList_Length(SeqList* list);

int SeqList_Capacity(SeqList* list);

int SeqList_Insert(SeqList* list, SeqListNode* node, int pos);

SeqListNode* SeqList_Get(SeqList* list, int pos);

SeqListNode* SeqList_Delete(SeqList* list, int pos);

#endif

4.#include "SeqStack.h"
#include "SeqList.h"

SeqStack* SeqStack_Create(int capacity)
{
    return SeqList_Create(capacity);
}

void SeqStack_Destroy(SeqStack* stack)
{
    SeqList_Destroy(stack);
}

void SeqStack_Clear(SeqStack* stack)
{
    SeqList_Clear(stack);
}

int SeqStack_Push(SeqStack* stack, void* item)
{
    return SeqList_Insert(stack, item, SeqList_Length(stack));
}

void* SeqStack_Pop(SeqStack* stack)
{
    return SeqList_Delete(stack, SeqList_Length(stack) - 1);
}

void* SeqStack_Top(SeqStack* stack)
{
    return SeqList_Get(stack, SeqList_Length(stack) - 1);
}

int SeqStack_Size(SeqStack* stack)
{
    return SeqList_Length(stack);
}

int SeqStack_Capacity(SeqStack* stack)
{
    return SeqList_Capacity(stack);
}
5.#ifndef _SEQSTACK_H_
#define _SEQSTACK_H_

typedef void SeqStack;

SeqStack* SeqStack_Create(int capacity);

void SeqStack_Destroy(SeqStack* stack);

void SeqStack_Clear(SeqStack* stack);

int SeqStack_Push(SeqStack* stack, void* item);

void* SeqStack_Pop(SeqStack* stack);

void* SeqStack_Top(SeqStack* stack);

int SeqStack_Size(SeqStack* stack);

int SeqStack_Capacity(SeqStack* stack);

#endif