I was trying to solve this problem with Python 3.8. I couldn't find a way other than to brute-force calculate all the possible permutations then check which permutation was valid. The program works fine, but as it's O(n!) time complexity (I think) it takes extraordinarily long when the input has ...

Is this script sufficient enough to validate user email input? <?php //1 DATABASE CONNECTION $dbHost = "HOST"; $dbUser = "USER"; $dbPassword = "PASSWORD"; $dbName = "DATABASE"; try { $dsn = "mysql:host=" . $dbHost . ";dbname=" . $dbName; $pdo = new PD...

I have written an accumulate function similar to std::accumulate that works on a std::array. The goal is to remove the loop using fold expressions. This code currently works in c++17: #include <array> template<class U, class F> class array_accumulate_helper { public: array_accumulate_helper(U&...

I've recently been learning C on my own, and I thought I'd try my hand at writing a graph implementation. // graph.h #ifndef GRAPH_H #define GRAPH_H #include <stdlib.h> #include <string.h> typedef struct node node_t; typedef struct node { int value; node_t **links; int links_count;...

In order to get more accustomed with classes in Python, I have written a genetic algorithm, which takes a level with a start and end point and searches for a route (not necessarily the optimal one). The output shows the basic level and when a solution has been found, the level with the route: Lev...

i am returning the booking successful message when no exception occurs and the totalcost is greater than 0. but my code still requires to return string anyways. so help me what to return if i am already returning the message inside if. i have also tried using flag and various other conditions to ...

I hope this is the right spot to ask this, if not tell me and I will delete the post. I need my GUI/program to update whenever the active_bots variable is changed, to display the contents of this variable. Is this the correct way to speak to the GUI instance? Pass the instance in the module-call ...

I wonder if someone can extend a solution for this similar problem to my case, where I want to extract multiple elements. (I don't believe the extra array dimension in my example is an issue) I have a large 3D (l,m,n) array. From each layer l, I need to extract every 5th row (all columns) but the...

I'm working with TCP sockets in C, specifically only for client side HTTP(S) requests, and would like to get some feedback on my send and recv code. You can make some assumptions regarding my code, as it is, by no means a complete example but I'll try to make it reproducible. Assume sfd has been...

Hello Guys How are you doing ? I have a simple question I want to know if my SCSS codes Correct ? Note : Everything work as I expected the Main Idea of this code is to generate Word Break Utilities for controlling word breaks in an element. using SCSS mean I can declare only css classes in html e...

I am trying to build this view model that has a ChildViewModel and this was the only way I was able to get it working. Any advice on how to make this code; cleaner, more effective, just overall better! static void Main(string[] args) { try { List<Subscription> List...

I have come across a situation where I feel running some code in parallel will greatly improve performance, but I am concerned about the implementation and am looking for some confirmation. Take the following controller resources [HttpGet] [Route("{id}")] public IHttpActionResult Get(int id) { ...

I have sorted ascending number if you do abs(arr) in below code, I am trying to search for index where sign got changed from negative to positive. Wrote this below code, but for some reasons, I believe we can improve it or optimize more. Any tips and tricks ? import numpy as np arr = np.array([-1...

Is this an appropriate use of async/await combined with Task continuation? I don't understand how my question does not fit the site's standards. Can I please get some guidance?

I made a placeholder for entry widgets from tkinter, so i was wondering how good it is, i just started learning python a bit before, so please do correct me if im wrong or if i missed something, or some easy steps or where it looses the efficiency. Code: import tkinter as tk from tkinter import t...

ant users to be able to deposit any amount of bitcoin to an address I will provide, so they can purchase items with it. The problem is how to make the deposit amount reflect in their wallet. This is my code <?php $xpub = "xpubYOUR_XPUB_KEY_GOES_HERE"; $url = "https://api.smartbit.com.au/v1/blockc...

Problem I keep trying to use various todo lists. But I keep coming back to the same situation; not having an active todo list. This can come in two forms: I don't have a habit to open bespoke software. I've tried using Excel, notes and calendars as they're close to my current work flows. But I t...

So this is a fun little project I am working on. This is my current progress with the game: import copy import random import time import pygame pygame.init() pygame.font.init() pygame.display.set_caption('Parsel Tongue') MARGIN = 60 WINDOW_SIZE = (600, 600 + MARGIN) RED = (255, 0, 0) BLACK = ...

I had to create a project for academic purposes that gets all friends and follower of a user, stores them on a mongoDB, then displays them on a table. I used django and plain html but when I tried my friend's account (230 contacts) it took 3 mins to load. That's a lot cause supposly my app should...

I have written a k-means function in Python to understand the methodology. I am trying to use this on a more complex dataset with a larger value for k, but it is running super slow. Does anyone have any recommendations for how I can improve this? I have provided code below, along with loading in ...

I am sending a series of SOAP messages to a server and capturing the results of the SOAP transaction. The issue that I am having is that I need to perform five SOAP calls, and each call requires some data from the previous call. This has led me to create a Data Class that holds Strings accessib...

I have this working code, but sendAndReceive function looks ugly/smelly to me. Eslint complains about using await inside a loop, and using true as conditional in while loop. Would there be a more elegant way to achieve this? I mean, "blocking" until a response appears in inbox before returning a ...

See my original post: here. I have one html page and four php files that allow users to sign up for an email list. One of the php scripts is a cronjob that deletes unverified rows older than 24 hours, and it is not included below for the sake of post length. I use PDO for my prepared statements. ...