I have two lists with 4 strings each. I shuffle them and then I select a string on each list to create a combination of strings from both lists. I want the four combinations (written below) repeated four times (so 16 combinations in total) but each of these combination should be presented in a ra...

I have this piece of code in my repository of nodejs. Criteria is huge but I have cut it short to keep the question simple. there are lot of if conditions, which I don't really like... wondering what is best way to refactor it to more simple and to the point... const { a, b, } ...

I am currently study the basic data structure and trying to implement everything as I go. can anyone give me some feedback about class BinarySearchTree how to make the code more elegant. any review are appreciated. class TreeNode: def __init__(self, value=None, left=None, right=None): ...

I'm starting using hooks, and I have a specific scenario that I'm thinking useEffectis appropriate for. Essentially what I'm doing is: I have some ssiData in the redux store. If that data has an invite code, and the invite isn't already accepted, then I want to display a QR code If the invi...

I'm trying to run multiple async Tasks in parallel with throttling using polly AsyncBulkheadPolicy + WaitAndRetryPolicy. My understanding so far is that the policy method ExecuteAsync does not itself make a call onto a thread, but is leaving that to the default Task Scheduler or someone before it...

The task: Given a string of parentheses, write a function to compute the minimum number of parentheses to be removed to make the string valid (i.e. each open parenthesis is eventually closed). For example, given the string "()())()", you should return 1. Given the string ")(", you ...

This is my first program with C# and VS and was originally a VBA Add-In I wrote. I have embarked on this as a learning exercise. The code does work and provides the desired output in a new workbook. The code below is called from a button on a custom ribbon created in Excel. It collects data from...

Requirements Display movie datas inside all tags that have the class movie_list Make an ajax call for fetching movie datas Fill loading text before fetch data If any error occurs during loading, the content should be empty What I did Cached all elements which have the class movie_list Made ...

I am trying to clear my localstorage when I am logging out of the application. I want to write a unit test case in Jasmine to check if this task is performed when logout function is run. I am writing test cases for the first time so got stuck in the approach. In my compoment.ts file I have a log...

I have been trying to improve my problem solving skills and dedicated few months trying to learn techniques for Dynamic Programming problems. I was trying to solve https://www.hackerrank.com/challenges/equal/problem. And I was able to find a solution Brute Force solution which did not pass the ...

I want to integrate Multi Factor Authentication (MFA) through Azure Active Directory (AD) B2C in my website built in PHP only for authentication purpose, I checked its documentation and some code samples, I have created following things from its tutorial which mentioned here https://docs.microso...

In this post, I attempted to compare the performance of two concurrency constructs: java.util.concurrent.Semaphore, ReentrantReadWriteLock. The idea is to increment/read an int in a thread-safe manner. net.coderodde.concurrent.fun.ConcurrentInt: package net.coderodde.concurrent.fun; impor...

Problem: Given a formula: GCD(x,y) means the GCD (Greatest Common Divisor) of x and y. For example: if N=2, then: f(2) = 1/GCD(1, 4) + 2/GCD(2, 4) + 3/GCD(3, 4) + 4/GCD(4,4) f(2) = 1/1 + 2/2 + 3/1 + 4/4 f(2) = 1 + 1 + 3 + 1 f(2) = 6 Given N, find f(N)! Simplified formula that I found us...

I'm pretty new to Qt but already have a little experience with C++ so the first "project" I wanted to try out was a GUI random number generator. I am looking for some advices either in naming conventions or OOP architecture, what should I do better and what I'm already doing good. The code is re...

I am looking for any advice regarding the following problem. I have thousands of emails that read like so: Joe Bloggs has registered interest using email joe@blogs.com I need to pull out the first name, last name, and email, then match against a spreadsheet. Nothing is unique, the email may e...

I've created a JavaFX app to the data about Vessels, Employees and Jobs. The current version works but it is quite slow which I need to fix. I understand the root of my problems but I do not know how to avoid it I have several entities class Vessel { IntegerProperty id; StringProperty n...

If we follow the DRY principle, then we should avoid repeating things like identifiers and class names etc. If we have a condition that checks a boolean so to hide or unhide an element by altering elements class: if (isVisible) { $('#btn-stop').removeClass('hidden'); } else { $('#btn-stop')...

I’ve just started a new job and am learning the LESS framework. I understand the concept of things like variables, nesting, etc, but wonder whether there are obvious inefficiencies in my code - e.g. is there a better way to structure the media queries, and is my code not dry enough? A snippet of...

I've been working on a way to optimize pixel computation in OpenGL with C. If this information helps, my current environtment = Linux (terminal) + GPU (Nvidia 1080Ti). I'm working with old OpenGL (with GLUT) and not Modern OpenGL. Here's what I'm doing, this function will take image input, this i...

I have a fully working Python server that utilizes Tornado, asyncio, websockets and tweepy(Twitter's Streaming api). The main point of this server is to receive a query from the user, call upon tweepy to track the query, perform sentiment analysis on any message received and send it back to the c...

I've done some research, reviewed countless SO questions that appeared similar, leading me to endless rabbit holes. My solution is working, but I don't like it. I want to create a random IV for AES and store it with my cipher. You'll see various approaches based on the comments in my code. This ...

Converting an Roman Digit to a Integer using C#. Any suggestions to reduce improve run time and memory usage would be appreciated. public static int RomanToInt(string s) { if (s.Length>=2) { int currentIndex = s.Length - 1,HighestValue=CharacterValue(s[curren...

I have built a real estate management system with Django. I want to know if my design database was wrong. Please let me know how to improve it. Should I make the models use more than two tables (classes)? class Profile(models.Model): user = models.OneToOneField(User, on_delete=models.CASCAD...

The Task is taken from codewars: Write a function that takes a string of braces, and determines if the order of the braces is valid. It should return true if the string is valid, and false if it's invalid. All input strings will be nonempty, and will only consist of parentheses, b...

Application Logic The software take odds data from an internet site and store them inside my own database, this application is basically a scraper. There are different types of odds, eg: FullTime Under / Over Double Chance My goal I want avoid code redundancy, for doing so, I created a met...

Let's consider you want to clone all items of a vector orig except the item of index i should be taken from alternative value alt. Lets say the items are of the type struct Bla{ // Some fields } Using for loop On simple solution would be: fn clone(orig: &Vec<Bla>, i: usize, alt: Bla) -> Vec<

That's the situation: I've a program that sends data to a text file. Those are just information about lights state of an arcade machine. I need to send this information on a COM port, so I've replaced the txt file with a symbolic link to a pipe. I don't have access to the source code of this main...

I am a beginner in programming. To rotate the array to left, I have written the below code. Please point out how to optimize the code and anything I am doing which is not good programming practice. package arrays; import java.util.Scanner; public class ArrayLeftRotation { public static in...

I managed to create the single linked list using the following class named node: class node{ protected: int info; //value int lenght; node *next; node *head; (In public I have the working funcitons). And the other class double_node: class double_node : public node{ node *prev; My issue h...

I'm currently undertaking a training course to try & further develop my skills in C#. The latest exercise was to create a basic stopwatch class that meets the following criteria - Design a class called Stopwatch. The job of this class is to simulate a stopwatch. It should provide two method...

I have an angular 7 app that is data focused and as a result has dozens of grids. These grids are from the Kendo UI for ANgular component library made by Telerik. These grid components expose hooks for the sort, filter, group functions of the grid. 90% of the grids I have are a very simple CRU...

Can you help me make this code bulletproof? My concern is the code does not catch errors and/or does not execute my intent. Intent: At the end of each billing cycle, Amazon generates a raw transaction file for my store's orders that cycle. I am converting that raw transaction file into accountin...

I asked this question here: https://stackoverflow.com/q/55640147/5202255 and was told to post on this forum. I would like to know whether my solution can be improved or if there is another approach to the problem. Any help is really appreciated! I have a pandas dataframe in which the column valu...

My code exceeds the time limit on the second test set. A suggestion/hint of a better algorithm would be appreciated. Problem Thanh wants to paint a wonderful mural on a wall that is N sections long. Each section of the wall has a beauty score, which indicates how beautiful it will look ...