1.顺序表的销毁和初始化：

初始化：

void SLInit(SeqList* ps)
{ps->a = NULL;ps->capacity = 0;ps->size = 0;
}

销毁：

void SLDestroy(SeqList* ps)
{if (ps->a)free(ps->a);ps->a = NULL;ps->size = ps->capacity = 0;
}

2.顺序表的扩容及打印：

扩容：

void CheckRoom(SeqList* ps)
{if (ps->size == ps->capacity){int newcapacity =  ps->capacity == 0 ? 4 : 2 * ps->capacity;SLDataType* tem = (SLDataType*)realloc(ps->a, sizeof(SLDataType) * newcapacity);ps->a = tem;ps->capacity = newcapacity;}
}

打印：

void PrintList(SeqList* ps)
{int i = 0;for (i = 0;i < ps->size;i++){printf("%d ", ps->a[i]);}
}

3.在顺序表的头部或尾部插入数据：

头插：

void PushFront(SeqList* ps,SLDataType x)
{CheckRoom(ps);int i = ps->size;for (i = ps->size - 1;i >= 0;i--){ps->a[i + 1] = ps->a[i];}ps->a[0] = x;ps->size++;
}

尾插：

void PushBack(SeqList* ps, SLDataType x)
{CheckRoom(ps);ps->a[ps->size] = x;ps->size++;
}

4.删除顺序表头部或尾部的数据：

头删：

void PopFront(SeqList* ps)
{assert(ps);assert(ps->size);for (int i = 1;i < ps->size;i++){ps->a[i - 1] = ps->a[i];}ps->size--;
}

尾删：

void PopBack(SeqList* ps)
{assert(ps);assert(ps->size);ps->size--;}

5.删除指定元素：

void Insert(SeqList* ps, SLDataType x)
{assert(ps);assert(ps->size);int i=Find(ps, x)-1;if (i < 0){printf("未找到数据\n");}else{for (i;i < ps->size-1;i++){ps->a[i] = ps->a[i + 1];}ps->size--;}
}

6.查找指定元素：

int Find(SeqList* ps,SLDataType x)
{assert(ps);assert(ps->size);int i = 0;for (i = 0;i < ps->size;i++){if (ps->a[i] == x){return i+1;}}return 0;
}