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Difference between the arraylist and linkedlist

by Anup Maurya
1 minutes read

ArrayList and LinkedList are two popular implementations of the List interface in Java. Here are some key difference between the arraylist and linkedlist are as follows

PropertyArrayListLinkedList
Data structureBacked by an arrayBacked by a doubly linked list
Insertion and deletionEfficient for adding or removing elements at the endEfficient for inserting or removing elements in the middle
Memory allocationAllocates memory for a fixed-size arrayAllocates memory for each element and next/previous pointers
IterationMore efficient for iterating over all elements in the listRequires traversing each element using the next pointer
SynchronizationNot synchronized by defaultNot synchronized by default

In general, ArrayList is better for scenarios where you need fast random access to elements in the list and are mainly adding or removing elements at the end of the list. LinkedList is better for scenarios where you need to frequently add or remove elements in the middle of the list, or if you need to iterate over the list in a specific order.

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