Insert node at middle of linked list in c#

Suppose we are inserted the following (1, 2, 3, 4, 5, 6, 7) node in a sequence. In this post are implement second approach.

insert linked list node in middle position
// Include namespace system
using System;
// Csharp Program for
// Insert linked list element at middle position

// Linked list node
public class LinkNode
{
    public int data;
    public LinkNode next;
    public LinkNode(int data)
    {
        this.data = data;
        this.next = null;
    }
}
public class LinkedList
{
    public LinkNode head;
    // Class constructors
    public LinkedList()
    {
        this.head = null;
    }
    // Insert node in middle position
    public void insert(int value)
    {
        // Create a new node
        var node = new LinkNode(value);
        if (this.head == null)
        {
            // First node
            this.head = node;
        }
        else
        {
            var temp = this.head;
            var middle = this.head;
            // Find the middle node
            while (temp.next != null && temp.next.next != null)
            {
                temp = temp.next.next;
                middle = middle.next;
            }
            // add node
            node.next = middle.next;
            middle.next = node;
        }
    }
    // Display linked list element
    public void display()
    {
        if (this.head == null)
        {
            return;
        }
        var temp = this.head;
        // iterating linked list elements
        while (temp != null)
        {
            Console.Write(temp.data.ToString() + " → ");
            // Visit to next node
            temp = temp.next;
        }
        Console.Write("NULL\n");
    }
    public static void Main(String[] args)
    {
        var sll = new LinkedList();
        // Add node
        sll.insert(1);
        sll.insert(2);
        sll.insert(3);
        sll.insert(4);
        sll.insert(5);
        sll.insert(6);
        sll.insert(7);
        // 1 → 3 → 5 → 7 → 6 → 4 → 2 → NULL
        sll.display();
    }
}
 1 → 3 → 5 → 7 → 6 → 4 → 2 → NULL


Please share your knowledge to improve code and content standard. Also submit your doubts, and test case. We improve by your feedback. We will try to resolve your query as soon as possible.

New Comment







© 2021, kalkicode.com, All rights reserved