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| Core Java - Interview Questions and Answers for 'List vs linkedlist' - 3 question(s) found - Order By Newest | ||||
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| Ans. Underlying data structure for ArrayList is Array whereas LinkedList is the linked list and hence have following differences - 1. ArrayList needs continuous memory locations and hence need to be moved to a bigger space if new elements are to be added to a filled array which is not required for LinkedList. 2. Removal and Insertion at specific place in ArrayList requires moving all elements and hence leads to O(n) insertions and removal whereas its constant O(1) for LinkedList. 3. Random access using index in ArrayList is faster than LinkedList which requires traversing the complete list through references. 4. Though Linear Search takes Similar Time for both, Binary Search using LinkedList requires creating new Model called Binary Search Tree which is slower but offers constant time insertion and deletion. 5. For a set of integers you want to sort using quicksort, it's probably faster to use an array; for a set of large structures you want to sort using selection sort, a linked list will be faster. | ||||
 Sample Code for ArrayList Sample Code for LinkedList | ||||
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 Discuss Correct / Improve  collections java data structures arraylist linkedlist arraylist vs linkedlist  Asked in 61 Companies  Basic  frequent | ||||
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 Related Questions | ||||
 If you are given a choice to use either ArrayList and LinkedList, Which one would you use and Why ? | ||||
| Will this code give error if i try to add two heterogeneous elements in the arraylist. ? and Why ? | ||||
| In a Linked list with sorted numbers, insert a new numbers while maintaining the sort order. | ||||
| Collections.sort can only be performed on .. a. Set b. List c. Map d. Any Collection implementation | ||||
| Is this a valid initialization ? Explain. Collection<Collection> collection = new LinkedList<LinkedList>(); | ||||
| What is the difference between List, Set and Map ? or What are the different Java Collections Interfaces ? | ||||
| Difference between Vector and ArrayList ? | ||||
| Overridden methods must have the same ... | ||||
| Which of the following doesn't extend Collection interface ? | ||||
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| Ans. A List is an child interface of collection interface in java where as Linked list is and implementation class of List interface which has doubly linked as a underlying data structure | ||||
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| Discuss Correct / Improve linkedlist list vs linkedlist Asked in 1 Companies | ||||
| Related Questions | ||||
| What is the difference between ArrayList and LinkedList ? | ||||
| If you are given a choice to use either ArrayList and LinkedList, Which one would you use and Why ? | ||||
| In a Linked list with sorted numbers, insert a new numbers while maintaining the sort order. | ||||
| Is this a valid initialization ? Explain. Collection<Collection> collection = new LinkedList<LinkedList>(); | ||||
| Difference between ArrayList and LinkedList ? | ||||
| Find the third last element in a linked list ? | ||||
| Write a program for LinkedList, with method to append node and traversing the list ? | ||||
| Write method to delete Node from a LinkedList. | ||||
| Is it legal to initialize List like this ? | ||||
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| Ans. Array List works on Array and when we add an element in middle of the list, Array List need to update the index of all subsequent elements. I the capacity is full, it even may need to move the whole list to a new memory location . Linked List works on Double linked list algorithm and all it has to do is to adjust the address of the previous and next elements. | ||||
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| Discuss Correct / Improve arraylist vs linkedlist collections list Asked in 2 Companies | ||||
| Related Questions | ||||
| What is the difference between ArrayList and LinkedList ? | ||||
| If you are given a choice to use either ArrayList and LinkedList, Which one would you use and Why ? | ||||
| Will this code give error if i try to add two heterogeneous elements in the arraylist. ? and Why ? | ||||
| In a Linked list with sorted numbers, insert a new numbers while maintaining the sort order. | ||||
| Collections.sort can only be performed on .. a. Set b. List c. Map d. Any Collection implementation | ||||
| Is this a valid initialization ? Explain. Collection<Collection> collection = new LinkedList<LinkedList>(); | ||||
| What is the difference between List, Set and Map ? or What are the different Java Collections Interfaces ? | ||||
| Difference between Vector and ArrayList ? | ||||
| Overridden methods must have the same ... | ||||
| Which of the following doesn't extend Collection interface ? | ||||
