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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

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Find first and last element of ArrayList in java

Last updated: 25 August 2022

Prerequisite: ArrayList in Java Given an ArrayList, the task is to get the first and last element of the ArrayList in Java, Examples:Input: ArrayList = [1, 2, 3, 4] Output ...read more

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Initializing a List in Java

Last updated: 11 January 2023

The Java.util.List is a child interface of Collection. It is an ordered collection of objects in which duplicate values can be stored. Since List preserves the insertion o...read more

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Initialize an ArrayList in Java

Last updated: 28 February 2023

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

Technical Scripter

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Java-List-Programs

Java Program to Convert an Array into a List

Last updated: 19 April 2023

Given an array. Your task is to convert the given array into a list in Java.Examples:Input: Array: [Geeks, forGeeks, A computer Portal] Output: List: [Geeks, forGeeks, A c ...read more

Java-Array-Programs

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Implementing a Linked List in Java using Class

Last updated: 11 January 2023

Pre-requisite: Linked List Data StructureLike arrays, Linked List is a linear data structure. Unlike arrays, linked list elements are not stored at the contiguous location...read more

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Reverse an ArrayList in Java using ListIterator

Last updated: 18 May 2023

Assuming you have gone through arraylist in java and know about arraylist. This post contains different examples for reversing an arraylist which are given below:1. By wri ...read more

Java-Collections

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ArrayList of ArrayList in Java

Last updated: 11 December 2018

We have discussed that an array of ArrayList is not possible without warning. A better idea is to use ArrayList of ArrayList.[sourcecode language="Java"]// Java code to de ...read more

Java-Collections

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Convert List to Array in Java

Last updated: 06 April 2023

The List interface provides a way to store the ordered collection. It is a child interface of Collection. It is an ordered collection of objects in which duplicate values ...read more

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Set to List in Java

Last updated: 10 June 2022

Given a set (HashSet or TreeSet) of strings in Java, convert it into a list (ArrayList or LinkedList) of strings. In java, Set interface is present in java.util package an ...read more

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Iterating over ArrayLists in Java

Last updated: 31 October 2021

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

Java-List-Programs

Conversion of Array To ArrayList in Java

Last updated: 26 October 2021

Following methods can be used for converting Array To ArrayList:Method 1: Using Arrays.asList() method Syntax: public static List asList(T... a)// Returns a fixed-size Lis...read more

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Vector vs ArrayList in Java

Last updated: 07 December 2022

ArrayList and Vectors both implement the List interface, and both use (dynamically resizable) arrays for their internal data structure, much like using an ordinary array.S...read more

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How to remove an element from ArrayList in Java?

Last updated: 10 January 2023

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

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Array vs ArrayList in Java

Last updated: 04 July 2023

Let us discuss the concept of the arrays and ArrayList briefly in the header to incorporate the understanding in java programs later landing onto the conclusive difference ...read more

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