# How to compare two nodes in linked list java ## How do you compare two nodes in a linked list?

If your pointers point to a node, then you can simply compare them. If you have a structure and they point to different fields in your node structure then you know the offset of the field in the structure, so subtract that from each pointer and compare those. You can see if pt1 == pt2 in that case.23 мая 2006 г.

## How do you compare two linked lists in Java?

Given two strings, represented as linked lists (every character is a node in a linked list). Write a function compare() that works similar to strcmp(), i.e., it returns 0 if both strings are same, 1 if first linked list is lexicographically greater, and -1 if the second string is lexicographically greater.

## How do you remove a node from a linked list?

Given only a pointer to a node to be deleted in a singly linked list, how do you delete it?

1. A simple solution is to traverse the linked list until you find the node you want to delete. …
2. Fast solution is to copy the data from the next node to the node to be deleted and delete the next node. …
3. Program:

## What is a node in a linked list?

A linked list is a linear data structure where each element is a separate object. Each element (we will call it a node) of a list is comprising of two items – the data and a reference to the next node. The last node has a reference to null. The entry point into a linked list is called the head of the list.

## What is doubly linked list with example?

In computer science, a doubly linked list is a linked data structure that consists of a set of sequentially linked records called nodes. Each node contains three fields: two link fields (references to the previous and to the next node in the sequence of nodes) and one data field.

## How do you compare elements in a linked list?

Compare numbers represented by Linked Lists

1. If the numbers are equal then print 0.
2. If the number represented by the first linked list is greater then print 1.
3. If the number represented by the second linked list is greater then print -1.

## How do I compare two lists in Java?

How to compare two ArrayList for equality in Java? You can compare two array lists using the equals() method of the ArrayList class, this method accepts a list object as a parameter, compares it with the current object, in case of the match it returns true and if not it returns false.

## How do you check if a linked list is empty?

Your linked list should have a “head” pointer. If the head is set to NULL then you have a zero-length linked list; if the head has any value other than NULL you must have at least one node in the linked list, so the list must have length of at least 1.

## How do you find the intersection of two linked lists?

Have a visited flag with each node. Traverse the first linked list and keep marking visited nodes. Now traverse the second linked list, If you see a visited node again then there is an intersection point, return the intersecting node. This solution works in O(m+n) but requires additional information with each node.

## How do you remove a middle node in a linked list?

Traverse through the list till temp points to a middle node. If current not point to null then, delete the middle node(temp) by making current’s next to point to temp’s next. Else, both head and tail will point to node next to temp and delete the middle node by setting the temp to null.

## How do we use insertion and deletion in linked list?

Following are the basic operations supported by a list.

1. Insertion − Adds an element at the beginning of the list.
2. Deletion − Deletes an element at the beginning of the list.
3. Display − Displays the complete list.
4. Search − Searches an element using the given key.
5. Delete − Deletes an element using the given key.

Insert a node at a specific position in a linked list

1. Traverse the Linked list upto position-1 nodes.
2. Once all the position-1 nodes are traversed, allocate memory and the given data to the new node.
3. Point the next pointer of the new node to the next of current node.
4. Point the next pointer of current node to the new node.

## What is linked list explain with example?

In computer science, a linked list is a linear collection of data elements whose order is not given by their physical placement in memory. Instead, each element points to the next. It is a data structure consisting of a collection of nodes which together represent a sequence.

## What are the different types of linked list?

There are three common types of Linked List.