第十四周作業2

#include<iostream>

using namespace std;

class Student
{                          
public:
	Student(int n,double s){num = n; score = s; next = NULL;}
	Student *next;
	int num;
	double score;
};

class MyList
{
public:
	MyList(){head = NULL;}
	MyList(int n, double s){head = new Student(n, s);} //以Student(n,s)作爲單結點的鏈表
	int display();  //輸出鏈表，返回值爲鏈表中的結點數
	void insert(int n, double s);  //插入：將Student(n,s)結點插入鏈表，該結點作爲第一個結點
	void append(int n, double s);  //追加：將Student(n,s)結點插入鏈表，該結點作爲最後一個結點
	void cat(MyList &il); //將鏈表il連接到當前對象的後面
	int length();  //返回鏈表中的結點數
private:
	Student *head;
};

int MyList::display() //輸出鏈表，返回值爲鏈表中的結點數
{
	Student *p;
	int n = 0;
	p = head;
	while(p != NULL)
	{
		cout << p-> num << " " << p->score << endl;   
		p = p->next;
		++n;
	}
	return n;
}

void MyList::insert(int n, double s)  //插入：將Student(n,s)結點插入鏈表，該結點作爲第一個結點
{
	Student *p = head;
	head = new Student(n, s);
	head->next = p;
}

void MyList::append(int n, double s)  //追加：將Student(n,s)結點插入鏈表，該結點作爲最後一個結點
{
	Student *p = head;
	while (p->next != NULL)
	{
		p = p->next;
	}
	p->next = new Student(n, s);
}

void MyList::cat(MyList &il) //將鏈表il連接到當前對象的後面
{
	Student *p = head;
	while (p->next != NULL)
	{
		p = p->next;
	}
	p->next = il.head;
}

int MyList::length()  //返回鏈表中的結點數
{
	int n = 0;
	Student *p = head;
	while (p->next != NULL)
	{
		p = p->next;
		++n;
	}
	return n;
}

int main()
{
	int n;
	double s;
	MyList head1;
	cout << "input head1: " << endl;  //輸入head1鏈表
	for(int i = 0; i < 3; i++)
	{
		cin >> n >> s;
		head1.insert(n, s);  //通過“插入”的方式
	}
	cout << "head1: " << endl; //輸出head1
	head1.display();

	MyList head2(1001, 98.4);  //建立head2鏈表
	head2.append(1002, 73.5);  //通過“追加”的方式增加結點
	head2.append(1003, 92.8);
	head2.append(1004, 99.7);
	cout << "head2: " << endl;   //輸出head2
	head2.display();

	head2.cat(head1);   //反head1追加到head2後面
	cout << "length of head2 after cat: " << head2.length() << endl;
	cout << "head2 after cat: " << endl;   //顯示追加後的結果
	head2.display();

	system("pause");
	return 0;
}

input head1:
e
head1:
-858993460 -9.25596e+061
-858993460 -9.25596e+061
-858993460 -9.25596e+061
head2:
1001 98.4
1002 73.5
1003 92.8
1004 99.7
length of head2 after cat: 6
head2 after cat:
1001 98.4
1002 73.5
1003 92.8
1004 99.7
-858993460 -9.25596e+061
-858993460 -9.25596e+061
-858993460 -9.25596e+061
請按任意鍵繼續. . .

 

 

 

 上週網速不行。。沒有按時提交。。特此補上