Remove LinkedList Elements — Leetcode 203

Java Solution for removing elements for linked list

Introduction

In this article, we will solve the leetcode 203 where we will remove the elements from the linked list. In this problem, we will discuss the solution through visual representation, covering some edge cases, and at the end discuss time and space complexity.

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Problem

Given the head of a linked list and an integer val, remove all the nodes of the linked list that has Node.val == val, and return the new head.

Example 1:

Input: head = [1,2,6,3,4,5,6], val = 6
Output: [1,2,3,4,5]

Example 2:

Input: head = [], val = 1
Output: []

Example 3:

Input: head = [7,7,7,7], val = 7
Output: [

Solution

Memory Dump

• In the linked list…