顺序表的实现

代码：

#include<iostream>
#include<memory.h>

#define MAXSIZE 10
using namespace std;

typedef struct {//顺序表存储结构
	int *elem;
	int length;
}SqList;

bool List_Init(SqList &L)
{//（1）构造一个空线性表
	L.elem = new int[MAXSIZE];
	memset(L.elem, 0, sizeof(L));
	if (!L.elem)
	{
		return false;
	}
	L.length = 0;//空表长度设置为0
	return true;
}

bool List_Insert(SqList &L, int i, int e)
{//（2）线性表的插入
	if (i<1 || i>L.length + 1)
	{//插入位置不合法
		return false;
	}
	if (L.length >= MAXSIZE)
	{//顺序表空间已满
		return false;
	}
	for (int j = L.length-1;j >= i-1;j--)
	{
		L.elem[j+1] = L.elem[j];
	}
	L.elem[i - 1] = e;
	L.length++;
	return true;
}

bool GetElem(SqList L, int i, int &e)
{//(3)取元素
	if (i<1 || i>L.length)
	{
		cout << "访问位置不合法"<<endl;
		return false;
	}
	e = L.elem[i - 1];
	return true;
}

bool Delete_List(SqList &L, int i)
{//(4)删除(根据下标删除)
	if (i<1 || i>L.length)
	{
		cout<<"输入下标不合法"<<endl;
		return false;
	}
	else
	{
		for (int j = i;j < L.length;j++)
		{
			L.elem[j - 1] = L.elem[j];
		}
		L.length--;
		cout << "删除成功！" << endl;
	}
	return true;
}

int LocateElem(SqList L, int e)
{//(5)查找
	for (int i = 0;i < L.length;i++)
	{
		if (L.elem[i] == e)
		{
			return i + 1;
		}
	}
	return 0;
}

int main()
{
	cout << "====================" << endl << "(1).构造一个空线性表:" << endl<<endl;
	SqList L;
	if (!List_Init(L))
	{
		cout << "(Failure)空链表创建失败!" << endl<<endl;
	}
	else
	{
	cout << "(Success)空链表创建成功!" <<endl<<endl;;


	cout << "====================" << endl << "(2).自定义一个顺序表:" << endl << endl;
	int n, e1;
	cout << "输入顺序表长度n:";cin >> n;
	cout << "请依次输入n个值(以空格分隔):";
	for (int i = 1;i <= n;i++)
	{
		cin >> e1;
		List_Insert(L, i, e1);
	}
	cout << "当前顺序表为：";
	for (int i = 1;i <= L.length;i++)
	{
		int tem;
		GetElem(L, i, tem);
		cout << tem << " ";
	}
	cout << endl;


	cout << "====================" << endl << "(3).插入:" << endl << endl;
	int i, e2, temp;
	cout << "请输入插入位置:";
	cin >> i;
	cout << "请输入插入值:";
	cin >> e2;
	temp = List_Insert(L, i, e2);
	if (temp)
	{
		cout << "插入成功!" << endl;
	}
	else if (!temp)
	{
		cout << "插入失败！\n";
		if (temp == false)
		{

			cout << "顺序表空间已满" << endl;
		}
		else
		{
			cout << "插入位置不合法" << endl;
		}
	 }
	cout << "当前顺序表为：";
	for (int i = 1;i <= L.length;i++)
	{
		int e;
		GetElem(L, i, e);
		cout << e << " ";
	}
	cout << endl;

	cout << "====================" << endl << "(4).删除:" << endl << endl;
	int l;
	cout << "请输入要删除元素的位置：";cin >> l;
	Delete_List(L, l);
	
	cout << "当前顺序表为：";
	for(int i=1;i<=L.length;i++)
	{
		int e;
		GetElem(L, i, e);
		cout << e << " ";
	 }
	cout << endl;

	cout << "====================" << endl << "(5).查找:" << endl << endl;
	cout << "请输入要查找的值:";
	int e3;
	cin >> e3;
	temp = LocateElem(L, e3);
	if (!temp)
	{
		cout << "(Sorry)顺序表中没有这个值"<<endl;
	}
	else
	{
		cout << "查找成功，元素位置为："<<temp << endl<<endl;
	}

	delete[]L.elem;
	cout << "====================" << endl<<"(Over)链表已释放！" << endl << endl;
	}
	system("pause");
	return 0;
}