If I develop the linked list from scratch, I can store a pointer to a Node object inside my business entity class and achieve constant O(1) remove and insertAfter operations. In the java standard library implementation, they are O(n) which can differ tremendously when processing large data sets. Why don’t they just made the Node class public and encapsulated some
Tag: data-structures
Is there an analogue of put function of Map interface in List?
I have an ArrayList(input) of Node objects. Each node stores the information about how many times a sentence has been searched. The definition of Node class is – class Node { String sentence; …
Doubly Linked List QuickSort Implementation Problem
I’ve implemented a classic Doubly Linked List: class Node
How to Avoid nested for Loops in java to get the heirarchical data?
// This method will return the list of reference names, in this method I wrote the code using nested //for-loops this handle only 3 subfolders set what if there is one more subfolder and how to handle it //without for loops, OverAll I should handle it dynamically //for-loops this handle only 3 subfolders set what if there is one more
How is the ArrayList add(Type value) method O(1) amortized time complexity?
Most implementations of the ArrayList use an array internally and when the size is already exhausted upon adding an element to the list, it resizes or “grows” by essentially doing the following: caching a new array with a new batch of freshly allocated memory. copying all the elements of the internal array into the new array. setting the internal array
Why does the class fields update their data after the method works
Help me please. Let’s say I have a Link class for linked lists. And there is the SortedList class where there are methods for working with data created by the first class. The insert method uses the first field. The first field passes its data to the current field. After the method exits with the current field, no changes are
implementation of LinkedList without last node
I have been asked to re-implement a linked list without the use of a tail. So I have to change its methods so it can work without using a tail node. The removeLast method confused me: here is what I tried to do, but it didn’t remove the node. What is wrong with my attempt? Test class Answer You need
Infix to Postfix short trick
Does anybody know a shortcut or short trick for infix to postfix conversion for multiple-choice questions exam? I know the method using stack but is there any fast technique for it? for example a+b*(c^d-e)^(f+gh)-i to abcd^e-fgh+^*+i- Answer Write the expression as a tree (leaves are values, internal nodes are operators), preserving the left-to-right order of values, and then write down
Is it possible to use 2 Data Type in an Custom ADT(Sorted Linked List)?
I am trying to do a Leaderboard for a game by using a Sorted Linked List. I was able to do so by sorting the point in descending order which mean higher point to lower point. Moreover, I will also …
Sorting based on order mentioned in a static map using java
How to sort a list of strings based on order mentioned in static map having item of list as key. List={“AU”,”I”,”U”, “O”, “A1”} Need to sort the above list of string using the below map which has …