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Java-List-Programs

57 posts

How to Add Element at First and Last Position of LinkedList in Java?

Last Updated: 15 November 2021

LinkedList is a part of Collection framework present inside java.util package. This class is an implementation of LinkedList data structure which is a linear data structur...read more

Java-Collections

java-LinkedList

Java-List-Programs

How to convert LinkedList to Array in Java?

Last Updated: 28 June 2022

Given a Linked List in Java, the task is to convert this LinkedList to Array. Examples:Input: LinkedList: ['G', 'e', 'e', 'k', 's'] Output: Array: ['G', 'e', 'e', 'k', 's'...read more

Java-Collections

java-LinkedList

Java-Array-Programs

Java-List-Programs

Split a List into Two Halves in Java

Last Updated: 10 August 2022

Here we are given a list and the task is to split it into two news lists as one can better perceive from the below illustration as follows:Illustration:Input : list = {1,...read more

Technical Scripter 2018

Java-Collections

Java-List-Programs

Convert a List of String to a comma separated String in Java

Last Updated: 21 October 2022

Given a List of String, the task is to convert the List to a comma separated String in Java.Examples:Input: ListString = ["Geeks", "ForGeeks", "GeeksForGeeks"]Output: "Gee...read more

Java-String-Programs

Java-List-Programs

Min and Max in a List in Java

Last Updated: 11 January 2023

Given an unsorted list of integers, find maximum and minimum values in it.Input : list = [10, 4, 3, 2, 1, 20]Output : max = 20, min = 1Input : list = [10, 400, 3, 2, 1, -1...read more

Technical Scripter

Technical Scripter 2018

java-LinkedList

Java-List-Programs

How to Remove Duplicates from ArrayList in Java

Last Updated: 11 December 2018

Given an ArrayList with duplicate values, the task is to remove the duplicate values from this ArrayList in Java.Examples:Input: List = [1, 10, 2, 2, 10, 3, 3, 3, 4, 5, 5]...read more

Java-Collections

java-LinkedHashSet

Java-List-Programs

Get first and last elements from ArrayList in Java

Last Updated: 07 June 2019

Given an array list, find the first and last elements of it.Examples:Input : aList = {10, 30, 20, 14, 2}Output : First = 10, Last = 2Input : aList = {10, 30, 40, 50, 60}Ou...read more

Technical Scripter

Technical Scripter 2018

Java-Collections

Java-List-Programs

Difference Between LinkedList and LinkedHashSet in Java

Last Updated: 11 December 2018

In this article you will learn difference between LinkedList and LinkedHashSet in java.Prerequisite: LinkedList : LinkedHashSetLinkedList class implements the List and De...read more

article_image

Technical Scripter

Technical Scripter 2018

java-LinkedList

java-LinkedHashSet

Java-List-Programs

Java-Set-Programs

Difference between ArrayList and HashSet in Java

Last Updated: 08 May 2023

Here are couple of differences between ArrayList and HashSet.Inheritance: Implementation: Implementation : ArrayList implements List interface while HashSet implements Set...read more

article_image

Technical Scripter

Difference Between

Technical Scripter 2018

Java-Collections

Java-List-Programs

Java-Set-Programs

Difference Between ArrayList and HashMap in Java

Last Updated: 20 January 2022

ArrayList is a part of the collection framework and is present in java.util package. It provides us with dynamic arrays in Java. Though, it may be slower than standard arr...read more

article_image

Technical Scripter

Technical Scripter 2018

Java-Collections

Java-List-Programs

Java-Map-Programs

Randomly Select Items from a List in Java

Last Updated: 12 February 2025

In this article, we will explore how to efficiently select an element from a list in Java. The basic approach involves generating a random index between 0 and the size of ...read more

Technical Scripter

Technical Scripter 2018

Java-List-Programs

How to remove a SubList from a List in Java

Last Updated: 18 January 2019

Given a list in Java, the task is to remove all the elements in the sublist whose index is between fromIndex, inclusive, and toIndex, exclusive. The range of the index is ...read more

Java-List-Programs

How to initialize a list in a single line in Java with a specified value?

Last Updated: 16 December 2019

Given a value N, the task is to create a List having this value N in a single line in Java.Examples:Input: N = 5Output: [5]Input: N = GeeksForGeeksOutput: [GeeksForGeeks]A...read more

Java-List-Programs

Initialize a list in a single line with a specified value

Last Updated: 02 January 2020

Given a value N, the task is to create a List having this value N in a single line in Java using Collection Framework only.Examples:Input: N = 5Output: [5]Input: N = Geeks...read more

Java-List-Programs

How to Find a Sublist in a List in Java?

Last Updated: 22 October 2020

List in Java contains index-based methods. This enables us to maintain the order collection. So this enables us to search, insert, delete, and even update the elements. Th...read more

Java-List-Programs