• 解决线性表的编程问题


    一、定义相关

    1、线性表:由n个相同的类型的数据元素组成的有限的序列。

        特点:(1)有且仅有一个开始结点,没有直接前趋,仅有一个后继结点。

         (2)有且仅有一个终端结点,没有直接后继,仅有一个直接前驱。

        分类:顺序表、单链表、双链表、循环链表

        操作:

    interface IlinarList<T>
        {
            void InsertNode(T a,int i);//插入操作
            void DeleteNode(int i);//删除操作
            T SearchNode(int i);//查找表元素
            T SearchNode(T value);//定位表元素
            int GetLength();//求取表长度
            void Clear();//清空操作
            bool IsEmpty();//判断线性表是否为空
        }

    二、代码分析

    1、顺序表

    //用顺序链表解决
        public class SeqList<T>:IlinarList<T>
        {
            private int maxsize;//顺序表的最大容量
            private T[] data;//定义一个用于存储数据元素的数组
            private int length;//顺序表的实际长度
    
            public int Maxsize{
                get { return maxsize; }
                set { maxsize = value; }
            }
    
            public int Length {
                get { return length; }
                set { length = value; }
            }
            //初始化线性表
            public SeqList(int size)
            {
                maxsize = size;
                data=new T[maxsize];
                length = 0;
            }
            //判断顺序表是否为满
            public bool IsFull()
            {
                if (length==maxsize)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            //判断顺序表是否为空
            public bool IsEmpty()
            {
                if (length==0)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            //清空操作
            public void Clear()
            {
                length = 0;
            }
            //求取顺序表的长度
            public int GetLength()
            {
                return length;
            }
            //在顺序表的末尾添加元素
            public void InsertNode(T a)
            {
                if (IsFull()==true)
                {
                    Console.WriteLine("List is full");
                    return;
                }
                data[length] = a;
                length = length + 1;
            }
            //在顺序表的第i个位置插入一个数据元素
            public void InsertNode(T a, int i)
            {
                if (IsFull() == true)
                {
                    Console.WriteLine("List is full");
                    return;
                }
                if (i < 1 || i > length+1)
                {
                    Console.WriteLine("Position is error");
                    return;
                }
                else
                {
                    data[i - 1] = a;
                    for (int j = i; j < length;j++ )
                    {
                        data[j+1] = data[j ];
                    }
                }
                length++;
            }
            //删除顺序表中的第i个元素
            public void DeleteNode(int i)
            {
                if (IsEmpty() == true)
                {
                    Console.WriteLine("List is empty .");
                    return;
                }
                if (i < 1 || i > length)
                {
                    Console.WriteLine("Position is error");
                    return;
                }
                for (int j = i ; j < length; j++)
                {
                    data[j-1] = data[j];
                }
                length--;
            }
            //获得顺序表中的第i个元素
            public T SearchNode(int i)
            {
                if (IsEmpty() == true || i < 1 || i > length)
                {
                    Console.WriteLine("List is empty or position is error !");
                    return default(T);
                }
                return data[i-1];
            }
            //在顺序表中查找值为value的数据元素
            public T SearchNode(T a)
            {
                if (IsEmpty() == true)
                {
                    Console.WriteLine("List is empty !");
                    return default(T);
                }
                int i = 0;
                for ( i = 0; i < length; i++)
                {
                    if (data[i].ToString().Equals(a.ToString()))
                    {
                        break;
                    }
                }
                if(i>length)
                {
                    return default(T);
                }
                return data[i];
            }
        }
    View Code

    2、单链表

    class SLinkList<T>:IlinarList<T>
        {
            private SNode<T> start;
            int length;
            public SLinkList()
            {
                start = null;
            }
            public bool IsEmpty()
            {
                if (start == null)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            public int GetLength()
            {
                return length;
            }
            public void Clear()
            {
                start = null;
            }
            public void InsertNode(T a)
            {
                if (start == null)
                {
                    start=new SNode<T>(a);
                    length++;
                    return;
                }
                SNode<T> current = start;
                while (current.Next != null)
                {
                    current = current.Next;
                }
                current.Next = new SNode<T>(a);
                length++;
            }
            //在单链表的第i个位置前插入一个数据元素
            public void InsertNode(T a, int i)
            {
                SNode<T> current;
                SNode<T> previous;
                if (i < 1 || i > length + 1)
                {
                    Console.WriteLine("Position is error !");
                    return;
                }
                SNode<T>newNodee=new SNode<T>(a);
                //在空链表或者链表的第一个位置插入第一个元素
                if (i == 1)
                {
                    newNodee.Next = start;
                    start = newNodee;
                    length++;
                    return;
                }
                //在单链表的两个元素之间插入一个元素
                current = start;
                previous = null;
                int j = 1;
                while (current != null && j < i)
                {
                    previous = current;
                    current = current.Next;
                    j++;
                }
                if (j == i)
                {
                    previous.Next = newNodee;
                    newNodee.Next = current;
                    length++;
                }
            }
            //删除单链表的第i个元素
            public void DeleteNode(int i)
            {
                if (IsEmpty() || i < 1||i>length+1)
                {
                    Console.WriteLine("SLinkList is empty or position is error !");
                }
                SNode<T> current = start;
                if (i == 1)
                {
                    start = current.Next;
                    length--;
                    return;
                }
                SNode<T> previous = null;
                int j = 1;
                while (current.Next != null && j < i)
                {
                    previous = current;
                    current = current.Next;
                    j++;
                }
                if (i == j)
                {
                    previous.Next = current.Next;
                    current = null;
                    length--;
                }
                else
                {
                    Console.WriteLine("the ith node is not exist !");
                }
            }
            public T SearchNode(int i)
            {
                if (IsEmpty())
                {
                    Console.WriteLine("List is empty !");
                    return default(T);
                }
                SNode<T> current = start;
                int j = 1;
                while (current.Next != null && j < i)
                {
                    current = current.Next;
                    j++;
                }
                if (j == i)
                {
                    return current.Data;
                }
                else
                {
                    Console.WriteLine("This ith node is not exit !");
                    return default(T);
                }
            }
            public T SearchNode(T value)
            {
                if (IsEmpty())
                {
                    Console.WriteLine("List is empty !");
                    return default(T);
                }
                SNode<T> current = start;
                int i = 1;
                while (!current.Data.ToString().Contains((value.ToString())) && current != null)
                {
                    current = current.Next;
                    i++;
                }
                if (current != null)
                {
                    return current.Data;
                }
                else
                {
                    return default(T);
                }
            }
        }
    View Code

    3、双链表

    class DLinkList<T>:IlinarList<T>
        {
            private DbNode<T> start;
            private int length;
            public DLinkList()
            {
                start = null;
            }
            public bool IsEmpty()
            {
                if (start == null)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            public void Clear()
            {
                start = null;
            }
            public int GetLength()
            {
                return length;
            }
            //在双向链表的末尾追加数据元素
            public void InsertNode(T a)
            {
                DbNode<T>newnode=new DbNode<T>(a);
                if (IsEmpty())
                {
                    start = newnode;
                    length++;
                    return;
                }
                DbNode<T> current = start;
                while (current.Next != null)
                {
                    current = current.Next;
                }
                current.Next = newnode;
                newnode.Prev = current;
                newnode.Next = null;
                length++;
            }
            //在双向链表的第i个数据元素的位置前插入一个数据元素
            public void InsertNode(T a, int i)
            {
                DbNode<T> current;
                DbNode<T> previous;
                if (i < 1)
                {
                    Console.WriteLine("Position is erroe !");
                    return;
                }
                DbNode<T> newNode=new DbNode<T>(a);
                //如果这个位置是第一个位置
                if (i == 1)
                {
                    newNode.Next = start;
                    start = newNode;
                    length++;
                    return;
                }
                //在双向链表的两个元素间插入一个元素
                current = start;
                previous = null;
                int j = 1;
                while (current != null && j < i)
                {
                    previous = current;
                    current = current.Next;
                    j++;
                }
                if (j == i)
                {
                    newNode.Next = current;
                    newNode.Prev = previous;
                    if(current!=null)
                       current.Prev = newNode;
                    previous.Next = newNode;
                    length++;
                }
            }
            //删除双向链表的第i个数据元素
            public void DeleteNode(int i)
            {
                if (IsEmpty() || i < 1)
                {
                    Console.WriteLine("Link is empty or position is error !");
                }
                DbNode<T> current = start;
                if (i == 1)
                {
                    start = current.Next;
                    length--;
                    return;
                }
                DbNode<T> previous = null;
                int j = 1;
                while (current.Next != null && j < i)
                {
                    previous = current;
                    current = current.Next;
                    j++;
                }
                if (j == i)
                {
                    previous.Next = current.Next;
                    if (current.Next != null)
                    {
                        current.Next.Prev = previous;
                        previous = null;
                        current = null;
                        length--;
                    }
                }
                else
                {
                    Console.WriteLine("The ith node is not exist !");
                }
            }
            //获取双向链表中查找第i个数据元素
            public T SearchNode(int i)
            {
                if (IsEmpty())
                {
                    Console.WriteLine("List is empty !");
                    return default(T);
                }
                DbNode<T> current = start;
                int j = 1;
                while (current.Next != null && j < i)
                {
                    current = current.Next;
                    j++;
                }
                if (j == i)
                {
                    return current.Data;
                }
                else
                {
                    Console.WriteLine("The ith node is not exist !");
                    return default(T);
                }
            }
            //在双向链表中查找值为value的数据元素
            public T SearchNode(T value)
            {
                if (IsEmpty())
                {
                    Console.WriteLine("List is empty !");
                    return default(T);
                }
                DbNode<T> current = start;
                int i = 1;
                while (!current.Data.ToString().Contains(value.ToString()) && current != null)
                {
                    current = current.Next;
                    i++;
                }
                if (current != null)
                {
                    return current.Data;
                }
                else
                {
                    return default(T);
                }
            }
        }
    View Code

    4、循环链表

    class ClinkList<T>:IlinarList<T>
        {
            private ClinkNode<T> start;
            int length;
            public ClinkList()
            {
                start = null;
            }
            public bool IsEmpty()
            {
                if (start == null)
                {
                    return true;
                }
                else
                {
                    return false;
                }
            }
            public int GetLength()
            {
                return length;
            }
            public void Clear()
            {
                start = null;
            }
            //在循环链表的末尾追加数据元素
            public void InsertNode(T a)
            {
                if (start == null)
                {
                    start=new ClinkNode<T>(a);
                    length++;
                    return;
                }
                ClinkNode<T> current = start;
                while (current.Next != null)
                {
                    current = current.Next;
                }
                ClinkNode<T> temp=new ClinkNode<T>(a);
                current.Next = temp;
                temp.Next = start;
                length++;
            }
            //在单链表的第i个位置前插入一个数据元素
            public void InsertNode(T a, int i)
            {
                ClinkNode<T> current;
                ClinkNode<T> previous;
                if (i < 1 || i > length + 1)
                {
                    Console.WriteLine("Position is error !");
                    return;
                }
                ClinkNode<T> newNodee = new ClinkNode<T>(a);
                //在空链表或者链表的第一个位置插入第一个元素
                if (i == 1)
                {
                    newNodee.Next = start;
                    start = newNodee;
                    length++;
                    return;
                }
                //在单链表的两个元素之间插入一个元素
                current = start;
                previous = null;
                int j = 1;
                while (current != null && j < i)
                {
                    previous = current;
                    current = current.Next;
                    j++;
                }
                if (j == i)
                {
                    previous.Next = newNodee;
                    newNodee.Next = current;
                    length++;
                }
            }
            //删除单链表的第i个元素
            public void DeleteNode(int i)
            {
                if (IsEmpty() || i < 1||i>length+1)
                {
                    Console.WriteLine("SLinkList is empty or position is error !");
                }
                ClinkNode<T> current = start;
                if (i == 1)
                {
                    start = current.Next;
                    length--;
                    return;
                }
                ClinkNode<T> previous = null;
                int j = 1;
                while (current.Next != null && j < i)
                {
                    previous = current;
                    current = current.Next;
                    j++;
                }
                if (i == j)
                {
                    previous.Next = current.Next;
                    current = null;
                    length--;
                }
                else
                {
                    Console.WriteLine("the ith node is not exist !");
                }
            }
            public T SearchNode(int i)
            {
                if (IsEmpty())
                {
                    Console.WriteLine("List is empty !");
                    return default(T);
                }
                ClinkNode<T> current = start;
                int j = 1;
                while (current.Next != null && j < i)
                {
                    current = current.Next;
                    j++;
                }
                if (j == i)
                {
                    return current.Data;
                }
                else
                {
                    Console.WriteLine("This ith node is not exit !");
                    return default(T);
                }
            }
            public T SearchNode(T value)
            {
                if (IsEmpty())
                {
                    Console.WriteLine("List is empty !");
                    return default(T);
                }
                ClinkNode<T> current = start;
                int i = 1;
                while (!current.Data.ToString().Contains((value.ToString())) && current != null)
                {
                    current = current.Next;
                    i++;
                }
                if (current != null)
                {
                    return current.Data;
                }
                else
                {
                    return default(T);
                }
            }
        }
    View Code

    三、应用:在学生成绩表中的应用

    1、顺序表

    class SNode<T>
        {
            private T data;//数据域
            private SNode<T> next;//引用域
            public SNode(T value, SNode<T> p)
            {
                data = value;
                next = p;
            }
            public SNode(SNode<T> p)
            {
                next = p;
            }
            public SNode(T value)
            {
                data = value;
            }
            public T Data
            {
                get { return data; }
                set { data = value; }
            }
            public SNode<T> Next
            {
                get { return next; }
                set { next = value; }
            } 
        }
    View Code

    2、单链表

    class ClinkNode<T>
        {
             private T data;//数据域
            private ClinkNode<T> next;//引用域
            public ClinkNode(T value, ClinkNode<T> p)
            {
                data = value;
                next = p;
            }
            public ClinkNode(ClinkNode<T> p)
            {
                next = p;
            }
            public ClinkNode(T value)
            {
                data = value;
            }
            public T Data
            {
                get { return data; }
                set { data = value; }
            }
            public ClinkNode<T> Next
            {
                get { return next; }
                set { next = value; }
            } 
        }
    View Code

    3、双链表

    class DbNode<T>
        {
            private T data;//数据域
            private DbNode<T> prev;//前驱引用域
            private DbNode<T> next;//后驱引用域
            //构造器
            public DbNode(T val, DbNode<T> p)
            {
                data = val;
                next = p;
            }
            public DbNode(DbNode<T> p)
            {
                next = p;
            }
            public DbNode(T val)
            {
                data = val;
                next = null;
            }
            public DbNode()
            {
                data = default(T);
                next = null;
            }
            public T Data
            {
                get { return data; }
                set { data = value; }
            }
            public DbNode<T> Prev
            {
                get { return prev; }
                set { prev = value; }
            }
            public DbNode<T> Next
            {
                get { return next; }
                set { next = value; }
            }
        }
    View Code

    4、循环链表

    class ClinkNode<T>
        {
             private T data;//数据域
            private ClinkNode<T> next;//引用域
            public ClinkNode(T value, ClinkNode<T> p)
            {
                data = value;
                next = p;
            }
            public ClinkNode(ClinkNode<T> p)
            {
                next = p;
            }
            public ClinkNode(T value)
            {
                data = value;
            }
            public T Data
            {
                get { return data; }
                set { data = value; }
            }
            public ClinkNode<T> Next
            {
                get { return next; }
                set { next = value; }
            } 
        }
    View Code

    5、学生成绩表类

      class StuNode
        {
            private string _stu_no;
            private string _stu_name;
            private int _stu_score;
            public string Stu_no
            {
                get { return _stu_no; }
                set { _stu_no = value; }
            }
            public string Stu_name
            {
                get { return _stu_name; }
                set { _stu_name = value; }
            }
            public int Stu_score
            {
                get { return _stu_score; }
                set { _stu_score = value; }
            }
            public StuNode(string stuNo, string stuName, int stuScore)
            {
                this._stu_no = stuNo;
                this._stu_name = stuName;
                this._stu_score = stuScore;
            }
            public override string ToString()
            {
                return _stu_no + _stu_name;
            }
        }
    View Code

    应用:

       private static void Main(string[] args)
            {
                IlinarList<StuNode> stuList = null;
                //SeqList<StuNode> stuList = null;
                #region 选择存储结构类型
    
                Console.WriteLine("请选择存储结构的类型:1、顺序表,2、单链表,3、双链表,4、循环链表");
                char selectFlag = Convert.ToChar(Console.ReadLine());
                switch (selectFlag)
                {
                    case '1':
                        Console.WriteLine("请输入学生的个数");
                        int maxsize = Convert.ToInt32(Console.ReadLine());
                        stuList = new SeqList<StuNode>(maxsize);
                        break;
                    case '2':
                        stuList=new SLinkList<StuNode>();
                        break;
                    case '3':
                        stuList=new DLinkList<StuNode>();
                        break;
                    case '4':
                        stuList=new ClinkList<StuNode>();
                        break;
                }
                #endregion
                while (true)
                {
                    Console.WriteLine("请输入操作选项:");
                    Console.WriteLine("1、添加学生成绩");
                    Console.WriteLine("2、删除学生成绩");
                    Console.WriteLine("3、按姓名查询学生成绩");
                    Console.WriteLine("4、按学号查询学生成绩");
                    Console.WriteLine("5、查看学生全部信息");
                    Console.WriteLine("6、退出");
                    selectFlag = Convert.ToChar(Console.ReadLine());
                    switch (selectFlag)
                    {
                        #region 添加学生成绩
                        case '1':
                            {
                                char falg;
                                do
                                {
                                    string stuNo;
                                    string stuName;
                                    int stuScore;
                                    Console.WriteLine("请输入学号");
                                    stuNo = Console.ReadLine();
                                    Console.WriteLine("请输入姓名");
                                    stuName = Console.ReadLine();
                                    Console.WriteLine("请输入成绩");
                                    stuScore = Convert.ToInt32(Console.ReadLine());
                                    StuNode newStuNode = new StuNode(stuNo, stuName, stuScore);
                                    //添加到首部
                                    if (stuList.GetLength() == 0)
                                    {
                                        stuList.InsertNode(newStuNode,1);
                                    }
                                    //添加到尾部
                                    else if (newStuNode.Stu_score > stuList.SearchNode(stuList.GetLength()).Stu_score)
                                    {
                                        stuList.InsertNode(newStuNode, stuList.GetLength() + 1);
                                    }
                                    else
                                    {
                                        for (int i = 1; i <= stuList.GetLength(); i++)
                                        {
                                            if (newStuNode.Stu_score <= (stuList.SearchNode(i).Stu_score))
                                            {
                                                stuList.InsertNode(newStuNode, i);
                                                break;
                                            }
                                        }
                                    }
                                    Console.WriteLine("还有学生成绩输入吗?(Y/N)");
                                    falg = Convert.ToChar(Console.ReadLine());
                                } while (falg == 'Y');
                                break;
                            }
    #endregion
                        #region 删除学生成绩
                        case '2':
                            {
                                StuNode temp;
                                Console.WriteLine("请输入要删除的学生的学号:");
                                string stuNo = Console.ReadLine();
                                for (int i = 1; i <= stuList.GetLength(); i++)
                                {
                                    temp = stuList.SearchNode(i);
                                    if (temp.Stu_no == stuNo)
                                    {
                                        stuList.DeleteNode(i);
                                        break;
                                    }
                                }
                                break;
                            }
    
                            #endregion
                        #region 按姓名查询成绩
                        case '3':
                            {
                                StuNode temp;
                                Console.WriteLine("请输入你要查询学生的姓名");
                                string stuName = Console.ReadLine();
                                for (int i = 1; i <= stuList.GetLength(); i++)
                                {
                                    temp = stuList.SearchNode(i);
                                    if (temp.Stu_name == stuName)
                                    {
                                        Console.WriteLine("姓名为{0}的成绩是{1}",stuName,temp.Stu_score);
                                        break;
                                    }
                                }
                                break;
                            }
    
                            #endregion
                        #region 按学号查询成绩
                        case '4':
                            {
                                StuNode temp;
                                Console.WriteLine("请输入要查找的学生的学号");
                                string stuNo = Console.ReadLine();
                                for (int i = 1; i < stuList.GetLength(); i++)
                                {
                                    temp = stuList.SearchNode(i);
                                    if (temp.Stu_no == stuNo)
                                    {
                                        Console.WriteLine("学号为{0}的成绩是{1}",stuNo,temp.Stu_score);
                                        break;
                                    }
                                }
                                break;
                            }
                        #endregion
                        #region 查看全部学生信息
                        case '5':
                            {
                                StuNode temp;
                                for (int i = 1; i <= stuList.GetLength(); i++)
                                {
                                    temp = stuList.SearchNode(i);
                                    Console.WriteLine("	{0}	{1}	{2}",temp.Stu_no,temp.Stu_name,temp.Stu_score);
                                }
                                break;
                            }
                        #endregion
                        #region 退出
                        case '6':
                            {
                                return;
                            }
                        #endregion
                    }
                    Console.WriteLine("按任意键退出......");
                    Console.ReadKey();
                }
            }

    四、实际应用

    问题描述:

    约瑟夫问题的一种描述是:编号为1、2....n的n个人按顺时针方向围座一圈,每人拿一个密码(正整数)。一开始任选一个正整数作为报数上限值m,从第一个人开始按顺时针方向从1开始顺序报数,报到m时停止报数,报m的人出列,将他的密码作为新的m值,从他的顺时针方向上的下一个人开始重新从1报数,如此下去,直至所有人全部出列。设计一个程序求出出列顺序。

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    using System.Threading.Tasks;
    
    namespace 循环链表实现约瑟夫环问题
    {
        internal class Program
        {
            public static int NodeLength = 1; //记录循环链表的长度,同时也是链表节点的序号
            public static int markNum = 0; //链表节点的序号
    
            private static void Main(string[] args)
            {
                Console.WriteLine("请输入节点的值(以-1作为输入的结束):");
                int ConsoleRead = Convert.ToInt32(Console.ReadLine()); //接受用户输入的数据,作为第一个节点
                Node CircleNode = new Node(ConsoleRead, NodeLength); //构造一个新节点
                CircleNode.Next = CircleNode; //将第一个节点的尾部指针指向该节点自身
                Node cursor = CircleNode; //设置一个指针
                Console.WriteLine("请输入节点的值(以-1作为输入的结束):");
                int input = Convert.ToInt32(Console.ReadLine());
                while (input != -1) //以-1作为输入的终结
                {
                    NodeLength++; //每增加一个新节点,链表长度加1 
                    Node nd = new Node(input, NodeLength);
                    nd.Next = cursor.Next; //将新节点加在链表指针的后面
                    cursor.Next = nd; //插入新的节点,形成循环链表
                    cursor = cursor.Next; //将指针后移动一位
                    Console.WriteLine("请输入节点的值(以-1作为输入的结束):");
                    input = Convert.ToInt32(Console.ReadLine());
    
                }
                //调用函数处理节点的删除
                DeleteElem(2, NodeLength, CircleNode);
                Console.ReadKey();
            }
    
            //处理节点的删除的函数
            public static void DeleteElem(int num, int Length, Node nd)
            {
                #region
    
                int DelData = 0; //删除的节点的数据域的值 
                if (Length == 0) //链表的长度为0说明节点已经删完,返回
                {
                    return;
                }
                int position = num%Length; //要删除的节点的位置
                if (Length == 1) //删除最后一个节点
                {
                    DelData = nd.data; //删除节点的值
                    Console.WriteLine("删除的节点的序号:{0}; 删除的节点的数据域的值:{1}", nd.mark, DelData.ToString());
                    return;
                }
                Node q = nd;
                Node p = q; //设置两个指针节点
                //寻找要删除的节点
                int i = 1;
                while (q.Next != q && i < position && q != null)
                {
                    p = q;
                    q = q.Next;
                    i++;
                }
    
                #endregion
    
                #region
    
                if (q.Next != q && q.Next != null)
                {
                    if (Length <= 2 && position == 1) //剩下两个元素
                    {
                        DelData = p.data;
                        markNum = p.mark;
                        q = q.Next;
                        q.Next = p.Next;
                    }
                    else if (Length <= 2 && position == 0)
                    {
                        q = q.Next;
                        DelData = q.data;
                        markNum = q.mark;
                        p.Next = q.Next;
                    }
                    else if (p == q && Length > 2) //节点数目多于两个,并且p,q指针指向同一个节点
                    {
                        if (position == 0)
                        {
                            q = q.Next;
                            while (q.Next.Next != p)
                            {
                                q = q.Next;
                            }
                            DelData = q.Next.data;
                            markNum = q.Next.mark;
                            q.Next = q.Next.Next;
                        }
                        else
                        {
                            DelData = p.data;
                            markNum = p.mark;
                            while (q.Next != null && q.Next != p)
                            {
                                q = q.Next;
                            }
                            q.Next = p.Next;
                        }
                    }
                    else
                    {
                        DelData = q.data;
                        markNum = q.mark;
                        p.Next = q.Next;
                    }
                }
                else
                {
                    DelData = q.data;
                    markNum = q.mark;
                }
    
                #endregion
    
                nd = q.Next;
                Length--;
                Console.WriteLine("删除的节点的序号:{0}; 删除的节点的数据域的值:{1}", markNum, DelData.ToString());
                //递归调用
                DeleteElem(DelData, Length, nd);
            }
        }
    
        class Node//将节点的结构封装成一个类
        {
            public int data;//数据域
            public Node Next;//指针域
            public int mark;//节点的标号(以节点入链表的顺序来标志)
            public Node(int val,int markVal)//声明一个新的节点
            {
                data = val;
                Next = null;
                mark = markVal;
            }
        }
    }

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  • 原文地址:https://www.cnblogs.com/chenyongblog/p/3227150.html
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