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; …

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 …

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 …

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. public class Link { public …

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 …

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 …

How do I read multiple CSV files to sort data in Java?

So, my Java project has two CSV files that needs to read and print some sort the data from high to low. First CSV file has date, location, new_cases, new_deaths, total_cases, total_deaths format. …

Can’t access my linked list methods and can’t iterate trough it

So im following along this playlist about data structures and in this video to conclude the linked list part, the professor explain we need an inner class called IteratorHelper. Video: https://www….