I need to create a custom list that adds elements in pairs. I copied a similar implementation and adjusted it as needed, but unfortunately, it doesn’t work. And I have this for testing my code so far. The problem is that when I call add method the size of the list increases by 2 as it should, but nothing is
Tag: list
How to use java stream to convert a List of some class to a list/set of any one property of class?
I have a class I have a list of class student say, List<Student> students whose size is 100. I want to stream id of all the students and save it in a set Set<int>id, one easy way to do it is using a for loop, can someone please tell how the same can be implemented using java stream API. Answer
Why is this intersection method in the doubly circular linked list not working? [closed]
Closed. This question needs debugging details. It is not currently accepting answers. Edit the question to include desired behavior, a specific problem or error, and the shortest code necessary to reproduce the problem. This will help others answer the question. Closed 1 year ago. Improve this question This is the intersection method where I should return a list that contains
Deleting the rear element of a circular linked list
I am trying various methods in a circular linked list in java and one of them is to delete the rear element. I’m pretty sure that my logic is correct but I think there is something wrong in my code. The logic is to browse the list until cur.next is before the rear element and then delete it. Then I
Checking adjacent cells in a java ArrayList for minesweeper
I have all my cells stored in an ArrayList and I want to check how many mines they are surrounded by (mines are cells with a not null mine png). I thought of checking the positions -1, +1, -9, +9, -10, +10, -11, +11 relative to each cell and add 1 to a counter inside the cell object. Problem is
Deleting all occurrences in a circular linked list. (java)
I want to implement a method that deletes all occurences of a certain value given as argument. I created 2 temporary elements and referenced them to the head and I will be browsing the list using them. I was able to write a whole code but I’m not getting any result, I don’t know where the problem is, neither I
How can I accept an argument list in a constructor and add it to a collection in Java?
I’m trying to make a constructor that would accept any number of variables of class “Item” as a variable argument list and add them to appropriate collection. What would be the best way to go about it? My code so far: Answer Item… args should be fine.. You can then just do this … instead of the static items block.
how to union 2 map into one with collection in value [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 1 year ago. Improve this question how to union 2 maps into one with collection in value this way it will override the value Answer
Combine two lists by ID
I have two lists of objects with contents that look like this: I can’t come up with anything good to “merge” these two lists overriding the nulls. The ideal end result would be: I’ve been looking into Kotlin collections to see if there’s anything that would help me get closer to this but I have only been able to do
Java: Round an Integer to an element of a given List
Supose i have a List of Integers: ints = {0,10,20,30,40,50} and an input value input = 17 How do i get the closest integer of the list to the given input? For my example it would be 20. Or to restate …