It can contain Duplicate elements and it also maintains the insertion order.ArrayList supports dynamic array that can grow as needed.Public class ArrayList extends AbstractList implements List, RandomAccess, Cloneable, Serializable It creates a dynamic array that grows based on the elements strength. This class implements List interface and an abstract AbstractList class. This class provides implementation of an array based data structure that is used to store elements in linear order.

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Overall, ArrayList is a powerful and flexible collection type that is useful in many situations, but it may not always be the best choice depending on the specific requirements of your program. Iteration performance: When iterating over an ArrayList, accessing elements by index can be slower than using an array, because each element is accessed through a function call rather than direct memory access. Memory usage: ArrayList can use more memory than arrays because it stores each element as an object, which requires additional memory overhead. Overhead: ArrayList has a small amount of overhead compared to arrays, which can affect performance in certain situations. Here are some advantages and disadvantages of using an ArrayList in Kotlin:ĭynamic resizing: Unlike arrays, ArrayList can resize dynamically, which means you can add or remove elements from the list as needed.įlexible storage: ArrayList can store objects of any type, making it useful for storing collections of heterogeneous data.Įasy manipulation: ArrayList provides a variety of methods for adding, removing, and manipulating elements in the list, making it easy to work with.

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Kotlin arraylist