LinkedList | fully implemented LinkedList made to work
kandi X-RAY | LinkedList Summary
kandi X-RAY | LinkedList Summary
This library was developed targeting Arduino applications. However, works just great with any C++. Implementing a buffer for objects takes time. If we are not in the mood, we just create an array[1000] with enough size. The objective of this library is to create a pattern for projects. If you need to use a List of: int, float, objects, Lists or Wales. This is what you are looking for. With a simple but powerful caching algorithm, you can get subsequent objects much faster than usual. Tested without any problems with Lists bigger than 2000 members.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of LinkedList
LinkedList Key Features
LinkedList Examples and Code Snippets
Lines of Code : 26
License : No License
Copypublic static ArrayList> createLevelLinkedList(TreeNode root) {
ArrayList> result = new ArrayList>();
/* "Visit" the root */
LinkedList current = new LinkedList();
if (root != null) {
current.add(root);
}
while (current. function DoubleLinkedList(args) {
/**
* The first node of the list.
* @type {DLLNode|null}
*/
this.first = null;
/**
* The last node of the list.
* @type {DLLNode|null}
*/
this.last = null;
/**
* The length of the list.
* @type { function DoubleLinkedList(args) {
/**
* The first node of the list.
* @type {DLLNode|null}
*/
this.first = null;
/**
* The last node of the list.
* @type {DLLNode|null}
*/
this.last = null;
/**
* The length of the list.
* @type { Community Discussions
Trending Discussions on LinkedList
QUESTION
Given an array of integers and number num.
I need to write a function public static int printExpr(int[] a, int num)
The function should print all the combinations that can give the number num with + or - operators, and to return the number of combinations.
The solution should be recursive
For example, for the given array:
{1, 3, 6, 2} and num=4
The output should be:
...ANSWER
Answered 2022-Apr-17 at 19:28Firstly, a quick recap on recursion.
Every recursive implementation consists of two parts:
Base case - a part that represents a set of simple edge-cases which should terminate the recursion. The outcome for these edge-cases is known in advance. For this task, the first base case is when the target sum is reached and the expression has to be printed on the console and the return value has to be
1(i.e. one combination was found). Another base case is a situation when array was fully discovered but the current sum differs from the target. For this case, return value will be0.Recursive case - the part of the method where recursive calls are made and where the main logic resides.
There are tree alternative branches of execution in the recursive case:
- we can either ignore it;
- contribute the target
sum(add to the current string with+sign in front of it and subtract it from the targetsum); - or subtract it from the
sum(add to the current string with-sign in front of it and add it to the targetsum).
In all these cases, we need to advance the index by 1 while calling the method recursively.
In order to found the total number of combinations, we need to introduce a variable (denoted as count in the code below). And the result returned by every recursive branch will contribute that variable.
The code might look like this:
QUESTION
How to represent circular struct in python using ctypes?
A linked list can be represented in the following way in c
...ANSWER
Answered 2022-Mar-25 at 14:14You should read the documentation of ctypes, there you will find this:
QUESTION
I am working through a short beginner's course on Algorithms and Data Structures. The instructor's language is Python; I am converting the code examples to JavasScript. So far, so good.
I am dealing with Linked Lists. The instructor tests the code using Python's __repr__() method. After days of trial and error, I have a working JS solution, but it is not exactly the same as the Python code. I would like to know if there is a better way of implementing the JS code, which I provide, along with the Python code.
Python
...ANSWER
Answered 2022-Mar-20 at 08:08A closer implementation would use a toString method. This method is called implicitly when a conversion to string is needed. Python has actually two methods for this, which have a slightly different purpose: __repr__ and __str__. There is no such distinction in JavaScript.
Furthermore, we should realise that Python's print will implicitly call __repr__, which is not how console.log works. So with console.log you'd have to enforce that conversion to string.
Here is how the given Python code would be translated most literally (I add the classes needed to run the script):
QUESTION
Vaadin 14. CallbackDataProvider. When service is slow and answer time is long then Grid connected to CallbackDataProvider is freezes with all UI. Some example:
...ANSWER
Answered 2022-Mar-18 at 09:43Vaadin 23:
In Vaadin 23 there is now a new feature, which allows you to define executor for DataCommunicator to use for asynchronous operation with Grid. If the value is null, DataCommunicator will operate synchronously and this is the default. If executor is defined, the fetch callback is run by executor and Grid is updated using ui.access(..). This requires Push to be enabled.
grid.getDataCommunicator().enablePushUpdates(Executors.newCachedThreadPool());
Vaadin 14:
One can attempt to reduce query time with caches. You can either use some generic cache like ehcache, or integrate cache in your data provider. It is application specific which is better for you, global or local cache.
If the query is still taking that long, then I would propose alternative approach for your UI. Instead of using callback data provider, use Grid with in memory data provider, but do not load whole data to the data provider at once. Instead create a paged view. Query new data when user clicks e.g. "next"/"previous", etc. buttons. And update the UI using UI#access method async when query completes.
QUESTION
I'm trying to implement LinkedList operation in Golang from scratch. But I found a problem when dealing with removing first element. My approach is using OOP style, but it seems the first element is not removed. This is the code I write,
...ANSWER
Answered 2022-Mar-12 at 13:36Everything is passed as a copy, so you can only change something if a pointer to it is passed, and you modify the pointed value.
So you can't do what you want without having to return the new list head (which you have to assign at the caller).
An alternative could be to pass the address of the head pointer (type of **LinkedList), which is ugly (having to always pass the head pointer's address). You could also add a separate method for removing the first element, something like RemoveFirst(), so you only have to pass to this method only. This RemoveFirst() could return the new head too, which the caller has to assign. This RemoveFirst() could also be a "regular" function instead of a method.
Another alternative is to create a wrapper for the list, which holds a pointer to the head. And you implement methods on the wrapper, not on the node type. And a method of the wrapper could change the field holding the head pointer.
See related: Can the pointer in a struct pointer method be reassigned to another instance?
QUESTION
Deep diving into Spring JPA and I have troubles to understand whats going on here. This is the code:
Entity
...ANSWER
Answered 2022-Feb-01 at 19:09As you notice, not all persons are persisted (P5 is missing in the DB), and neither are all the relationships you probably intended.
The reason that P5 is missing, is that you cascade the merge operation only along the knownBy-associated persons:
P1 -> P3 -> P2 -> P4
(P5 is not knownBy anyone, so it is not reached by the cascaded merge)
When each of the four entities gets persisted, so is the information on the associations for which it holds the owning side.
In your case, the owning side is knows (as knownBy is mappedBy="knows").
So the only association-information which is persisted is:
P1 (ID1) -> P2 (ID3)
P2 (ID3) -> P3 (ID2)
(note that P2 has ID 3, which is confusing, but makes sence since the ID is generated and it was later persisted)
P5 -> P3 is not persisted since P5 is not persisted at all (as explained above)
So to properly persist all information, always make sure that bi-directional associations are synchronized. And be aware of potential problems when cascading operations on @ManyToMany associations, since this can lead to performance problems (lots of cascaded operations) and unintended results (e.g. when cascading removes).
https://vladmihalcea.com/jpa-hibernate-synchronize-bidirectional-entity-associations/
https://thorben-janssen.com/avoid-cascadetype-delete-many-assocations/
QUESTION
When using the method of fast and slow, in a linkedlist which has loop. The two pointers will meet at a node. Then take one of the two pointers to the head node, the other pointer stay. Next, make them all take one stap every time. At the end, they will meet at the first node of the loop. I want to know why. Thanks.what I mean the "first node in the loop"
...ANSWER
Answered 2022-Jan-19 at 09:44You will understand this by solving a few examples by hand:
QUESTION
I have the following Map:
...ANSWER
Answered 2022-Jan-04 at 00:42Yes if you use putAll it removes the map entries with same keys. That's how a map works. What you are looking for is a way to group all the entries by key which is somewhat easy to do with Streams.
QUESTION
(Solution has been found, please avoid reading on.)
I am creating a pixel art editor for Android, and as for all pixel art editors, a paint bucket (fill tool) is a must need.
To do this, I did some research on flood fill algorithms online.
I stumbled across the following video which explained how to implement an iterative flood fill algorithm in your code. The code used in the video was JavaScript, but I was easily able to convert the code from the video to Kotlin:
https://www.youtube.com/watch?v=5Bochyn8MMI&t=72s&ab_channel=crayoncode
Here is an excerpt of the JavaScript code from the video:
Converted code:
...ANSWER
Answered 2021-Dec-29 at 08:28I think the performance issue is because of expandToNeighbors method generates 4 points all the time. It becomes crucial on the border, where you'd better generate 3 (or even 2 on corner) points, so extra point is current position again. So first border point doubles following points count, second one doubles it again (now it's x4) and so on.
If I'm right, you saw not the slow method work, but it was called too often.
QUESTION
I'm looking at the Linked List implementation from here, and it shows how the class conforms to the Collection protocol:
...ANSWER
Answered 2021-Dec-21 at 01:39Based on the code you show:
It's not the linked list elements which are
Comparable, but the indices.Collectionhas noComparablerequirement on its elements, but does require that its indexes be comparable so that they can be reasonably ordered:
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Vulnerabilities
No vulnerabilities reported
Install LinkedList
Unzip and modify the Folder name to "LinkedList" (Remove the '-version')
Paste the modified folder on your Library folder (On your Libraries folder inside Sketchbooks or Arduino software).
Reopen the Arduino software.
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