Hot File

Create Program to Print Middle Element of a Linked List

View: 270    Dowload: 0   Comment: 0   Post by: hanhga  
Author: none   Category: Php&mySql   Fields: Other

9 point/1 review File has been tested

Write a program to print middle element of a linked list. It is also the most asked question in interviews. I assume you have a basic understanding of linked list and it’s concept.

Introduction

Write a program to print middle element of a linked list. It is also the most asked question in interviews.  I assume you have a basic understanding of linked list and it’s concept.

First Method:

i) Traverse a linked list and maintain the count of nodes.

ii) After traversing a linked list we know it’s length. In a second traversal, traverse the linked list by count/2 and print the last element(count/2). We get the middle element of a linked list.

The above method works good. But you can solve this problem in one pass, by using two pointers.

Second Method:

i) Take two pointers. Move the first pointer by one and second pointer by two.

ii) When the second pointer reaches at the end of a linked list. The first pointer points to the middle element of a linked list.

Program to Print Middle Element of a Linked List

#include <stdio.h>
struct node{
    int data;
    struct node* next;
};
 
struct node* head;
 
void insert_node(int data){
 
    /* Creating a new node */
    struct node* newnode=(struct node*)malloc(sizeof(struct node*));
    newnode->data = data;
    newnode->next = head;
 
    head = newnode;
}
 
void middleelement(){
 
   /* Take two pointers first and second */
    struct node *first,*second;
    first=second = head;
 
    if(head!=NULL){
 
      while(second!=NULL && second->next!=NULL){
 
           /* Move first by one and second by two step */
           second = second->next->next;
           first=first->next;
      }
 
       /* Print value of first node which points to middle */
        printf("Middle element is %d",first->data);
    }
 
}
 
main()
{
 
  head = NULL;
 
  insert_node(2);
  insert_node(4);
  insert_node(6);
  insert_node(8);
  insert_node(9);
 
  middleelement();
 
}

Create Program to Print Middle Element of a Linked List

Create Program to Print Middle Element of a Linked List Posted on 06-10-2016  Write a program to print middle element of a linked list. It is also the most asked question in interviews. I assume you have a basic understanding of linked list and it’s concept. 9/10 270

Comment:

To comment you must be logged in members.

Files with category

  • How to Picking the Brains of Your Customers with Microsoft’s Text Analytics

    View: 3535    Download: 0   Comment: 0   Author: none  

    How to Picking the Brains of Your Customers with Microsoft’s Text Analytics

    Category: Php&mySql
    Fields: Other

    5/1 review
    With the explosion of machine learning services in recent years, it has become easier than ever for developers to create “smart apps”. In this article, I’ll introduce you to Microsoft’s offering for providing machine-learning capabilities to apps.

  • How to MySqli Tutorial PHP MySqli Extension

    View: 274    Download: 0   Comment: 0   Author: none  

    How to MySqli Tutorial PHP MySqli Extension

    Category: Php&mySql
    Fields: Other

    0/0 review
    PHP provides three api to connect mysql Database.

  • Make Laravel Artisan Commands

    View: 247    Download: 0   Comment: 0   Author: none  

    Make Laravel Artisan Commands

    Category: Php&mySql
    Fields: Other

    0/0 review
    Artisan is the command line tool used in Laravel framework. It offers a bunch of useful command that can help you develop application quickly. Apart from Artisan available commands, you can create your own custom commands to improve your workflow.

  • Check if a Number is a Power of 2

    View: 226    Download: 0   Comment: 0   Author: none  

    Check if a Number is a Power of 2

    Category: Php&mySql
    Fields: Other

    2.25/2 review
    How to check if a number is a power of 2. To understand this question, let’s take some example.

  • Concatenate columns in MySql

    View: 292    Download: 0   Comment: 0   Author: none  

    Concatenate columns in MySql

    Category: Php&mySql
    Fields: Other

    0/1 review
    Artisan is the command line tool used in Laravel framework. It offers a bunch of useful command that can help you develop application quickly. Apart from Artisan available commands, you can create your own custom commands to improve your workflow

  • How to Query NULL Value in MySql

    View: 221    Download: 0   Comment: 0   Author: none  

    How to Query NULL Value in MySql

    Category: Php&mySql
    Fields: Other

    5/1 review
    Misunderstanding NULL is common mistake beginners do while writing MySql query. While quering in MySql they compare column name with NULL. In MySql NULL is nothing or in simple word it isUnknown Value so if you use comparison operator for NULL values...

  • How to Abstract Class in PHP

    View: 253    Download: 0   Comment: 0   Author: none  

    How to Abstract Class in PHP

    Category: Php&mySql
    Fields: Other

    0/0 review
    What is an abstract class in PHP and when to use an abstract class in your application. In this tutorial, we’ll learn about abstract class and their implementation.

  • Use Enums in Rails for Mapped Values

    View: 245    Download: 0   Comment: 0   Author: none  

    Use Enums in Rails for Mapped Values

    Category: Php&mySql
    Fields: Other

    5/1 review
    When I worked in a call center, we used to mark cases with different statuses. This allowed upper management to get a handle on where cases stood, what the bottlenecks were and flow of calls. Thankfully it has been a long time since I worked in a...

 
Newsletter Email

File suggestion for you

File top downloads

logo codetitle
Codetitle.com - library source code to share, download the file to the community
Copyright © 2015. All rights reserved. codetitle.com Develope by Vinagon .Ltd