[数据结构] 动态顺序表应用

动态顺序表能够根据数据存储的需要动态地管理内存空间。

SeqList.h

#include<stdio.h>
#include<stdlib.h>//静态顺序表
//小了不够用，多了浪费
//#define N 10
//typedef int SLDatatype;
//struct SeqList
//{
//	SLDatatype a[N];
//	int size;
//
//};typedef int SLDatatype;
typedef struct SeqList
{SLDatatype* a;int size;//数据个数int capacity;//容量
}SL;
void SLInit(SL* psl);
void SLDestory(SL* psl);
void SLPrint(SL* psl);
void SLPushBack(SL* psl, SLDatatype x);
void SLPushFront(SL* psl, SLDatatype x);
void SLPopBack(SL* psl);
void SLPopBack(SL* psl);

SeqList.c

#include"SeqList.h"void SLInit(SL *psl) {psl->a = (SLDatatype*)malloc(sizeof(SLDatatype) * 4);if (psl->a == NULL) {perror("malloc fail");return 0;}psl->capacity = 4;psl->size = 0;
}void SLDestory(SL* psl) {free(psl->a);psl->a = NULL;psl->size = 0;psl->capacity = 0;
}void SLPrint(SL* psl) {for (int i = 0; i < psl->size; i++) {printf("%d ", psl->a[i]);}printf("\n");
}void SLCheckCapacity(SL* psl) {if (psl->size == psl->capacity) {SLDatatype* tmp = realloc(psl->a, sizeof(SLDatatype) * psl->capacity * 2);if (tmp == NULL) {perror("realloc fail");return 0;}psl->a = tmp;psl->capacity *= 2;}
}void SLPushBack(SL* psl, SLDatatype x) {//尾部数据插入SLCheckCapacity(psl);psl->a[psl->size] = x;psl->size++;}
void SLPushFront(SL* psl, SLDatatype x);
void SLPopBack(SL* psl);
void SLPopBack(SL* psl);

Test.c

#include"SeqList.h"
int main() {SL s;SLInit(&s);SLPushBack(&s, 1);SLPushBack(&s, 2);SLPushBack(&s, 3);SLPushBack(&s, 4);SLPushBack(&s, 5);SLPushBack(&s, 6);SLPushBack(&s, 6);SLPushBack(&s, 6);SLPushBack(&s, 6);SLPrint(&s);SLDestory(&s);return 0;
}