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Java-ArrayList

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Minimum number of operations required to vanish all elements

Last Updated: 24 November 2023

Given an array A[] length N along with an integer K. Select a subarray of size K and replace all elements with X (Cross), which has a minimum value in that subarray. Then ...read more

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Geeks Premier League 2023

How to Declare an ArrayList with Values in Java?

Last Updated: 01 February 2024

ArrayList is simply known as a resizable array. Declaring an ArrayList with values is a basic task that involves the initialization of a list with specific elements. It is...read more

How to Write an ArrayList of Strings into a Text File?

Last Updated: 02 February 2024

In Java, ArrayList is a class in the java.util package. It facilitates the creation of dynamic arrays that can dynamically grow or shrink as elements are added or removed....read more

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How to Split an ArrayList in Multiple Small ArrayLists?

Last Updated: 01 February 2024

In Java, ArrayList is a pre-defined class of the Java collection framework, and it can be used to add the elements dynamically. One more special feature is that it can shr...read more

How to Convert an ArrayList Containing Integers to Primitive Int Array?

Last Updated: 09 February 2024

In Java, ArrayList is the pre-defined class of the Java Collection Framework. It is part of the java.util package. ArrayList can be used to add or remove an element dynami...read more

How to Get Substring Items Within Arraylist in Java?

Last Updated: 02 February 2024

In Java, ArrayList is the pre-defined class of the Java collection framework, and it is part of java.util package. ArrayList can be used to add or remove an element dynami...read more

How to make ArrayList Thread-Safe in Java?

Last Updated: 05 February 2024

In Java, Thread is the smallest unit of execution within the program. It represents an independent path of execution that can run concurrently with other threads. When dea...read more

How to Make a Deep Copy of Java ArrayList?

Last Updated: 08 February 2024

The Advantage of ArrayList is it can be defined without giving a predefined size. But the disadvantage is it is more expensive to create and maintain. To have the solution...read more

Calculate the Sum and Average of Elements in an ArrayList in Java

Last Updated: 12 February 2024

A Dynamic and Adaptable method for storing and managing collections of elements is to use ArrayList. Finding the total and average of an ArrayList's items is frequently re...read more

Java-Collections

How to Convert an ArrayList or an Array into a TreeSet in Java?

Last Updated: 05 February 2024

In Java, ArrayList allows random access because it works like an array. It means you can access any element by its index in O(1) at any time. A TreeSet is a sorted set imp...read more

Java-Collections

How to Convert a Comma-Separated String into an ArrayList in Java?

Last Updated: 16 November 2024

In Java, to convert a comma-separated string into ArrayList, we can use the split() method to break the string into an array based on the comma delimiter. Another method w...read more

How to Convert an ArrayList into a JSON String in Java?

Last Updated: 28 April 2025

In Java, an ArrayList is a resizable array implementation of the List interface. It implements the List interface and is the most commonly used implementation of List. In ...read more

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How to Convert an ArrayList of Objects to a JSON Array in Java?

Last Updated: 28 April 2025

In Java, an ArrayList is a resizable array implementation of the List interface. It implements the List interface and is the most commonly used implementation of List.In t...read more

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Java Collection Exercise

Last Updated: 12 March 2024

The Java Collection framework is a fundamental part of the Java programming language, It covers a major part of Java and acts as a prerequisite for many Advanced Java Topi...read more

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Java-Collections

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Java-Collection-Programs

How to use an ArrayList as a Prepared Statement Parameter?

Last Updated: 26 April 2024

ArrayList is part of the Java Collection Framework and In this article, we will learn how to use an ArrayList as a prepared statement parameter.Prepared StatementIt is a s...read more

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