I’m trying to write a program where I have a 2D array, stored_variables[][], where each element of stored_variables is a list rather than a normal element. I know how to make a 2D array of lists, but not how to do this. Answer You just create your 2D array, and put another array inside each field. So basically you end
Tag: list
How do I work with objects in lists and can I create multiple objects with different names in a loop?
I need to create Objects of a class called “Tile”. I have 9×9 chess board like grid and want to initiate the whole board at once. The position of a Tile is defined by an x and y-axis and I need to work with those later. I thought about doing it with a loop but I want each object to
How to sum elements of List
I want to sum the possibilities (of some characters) in the context of Shannon-Fano Algorithm. Example input/output Given poss as a List of Strings filled with possibilities. For example the possibilities are as follows: and the sum must be 1 (after adding all the possibilities). What I already tried Following code is what I tried. But the problem is that
Doubly Linked List QuickSort Implementation Problem
I’ve implemented a classic Doubly Linked List: class Node
Sort A List of an Object with other object’s method
In the bellow code, with such classes, how can I sort an ArrayList of Students by the score the got from Courses List? I mean how can I sort a List of a specific class by an attribute of this class which is a child of another class. Answer Your “Student” class is confusing. Based on the name, it sounds
Remove Alternate Elements from ArrayList in java 7
I have an array of String containing below elements Now what I want to do I need to remove all the decimal value in string format like 5.0,5.5 and 6.0 so my final array should contain elements 99,100,101 so what I’d done so far is show in below code I have hardcoded the values which is quite bad practice as
How to get list of months between two dates in Java
I am trying to get a list of months (actually the first days of those months) between two dates in Java but I am not getting the expected results. The start date is “3/17/2020”, the end date “3/17/2021” and the expected result is as follows: Here below is the code I am using: With the above code I am getting
The value in LinkedHashMap cleared when I try to clear the object value (Java)
i got a problem when using LinkedHashMap. I try to store some value in it and then updated it. I’m using String for the key and List for the value. I put 2 value on the List and put them to …
Appending a string when find duplicate using stream
I do have a use case where i need to append a string(name) with version (name_version) which i will have in a model layer. But this is to be done only for the name which are duplicate in the list. …
Find the sequence in the String matches the items in the List
Suppose I have a list and then I add names to the list And I have a String String names = “abcrnpqrrnxyz”; I want to verify that the string is comprised in the same order as the elements in the list are. eg: abc should come first then pqr and then xyz What I am trying to do: Is there