I have tried two different methods to find the sum of primes under a certain number. However both of these methods end up taking a very long time for large numbers. How can I optimise either of these two methods? Method 1 (Sieve of Eratosthenes): import time import math primes_in_range = [2] ...

This is the code for backtracking with Tries. But the code is not able to find all 3 strings as mentioned in dictionary It is unable to traverse for SEE, SEEK. Could you help me figure out where I am going wrong. #define R 3 #define C 3 using namespace std; int used[R][C]; struct Node { ...

I developed an application for processing data. Below main function is called first when data was pushed to my application. def main(data_to_be_processed, target_method_config): module_name, class_name \ = target_method_config.get("module_name"), target_method_config.get("class_name...

This code I try to write based on last week codewars event that I joined which I can't figure it out during the event. The question is: T9 Autocomplete The file contacts.txt has names and phone numbers. The format is: column 1 = name column 2 = phone number Your program shou...

As part of the exercise in the book "Automate the boring stuff with Python" chapter 13 on Excel, I had the following exercise: Reads the data from the Excel spreadsheet Counts the number of census tracts in each county Counts the total population of each county Prints the results Here is the ...

I've implemented a Segmented Sieve of Eratosthenes that assumes each segment is about length \$ \sqrt{N}\$ for some upper limit \$N\$. I further optimized the function by skipping all the evens when sieving. I'd like to know if anyone has any views or advice on further optimizing my implement...

Background I am working on an e-commerce website, my web server is written in ASP.NET MVC (C#, EF6) and I am using 3 instances of MySQL DB. These DBs are in a cluster (Galera Cluster) and they are automatically replicated. The problem the I want to solve is load balancing the the request among ...

I would like to have some feedback on the best way and good practice to handle the default case in a switch: switch (name) { case "ant": return new AntProcessor(); case "parrot": return new ParrotProcessor(); ...

I have written a program for a user-defined binary data type in JAVA. It has static methods for purposeful usage methods for binary arithmetic methods for bitwise operations It's working as intended, but I feel the code is a bit too verbose. Any suggestions on how to shorten it? ...

I developed an application for processing data. Below main function is called first when data was pushed to my application. def main(data_to_be_processed, target_method_config): module_name, class_name \ = target_method_config.get("module_name"), target_method_config.get("class_name...

I am trying to search a json string(events) from a given list (eventSubscriptions).Here is what I have tried. import com.fasterxml.jackson.databind.ObjectMapper; private boolean isEventsOverlapping(String events, List<EventSubscription> eventSubscriptions) throws IOException { List<...

I am in the process of using Java Builder design pattern to write a connector class that has optional member variables and need some suggestions. My question from here Standard practices for employing Java Builder design pattern has been updated and the code now presented is not psuedocode but is...

I made a closure-based PHP structure that behaves mostly like a classical object. To change the object's state, one must derive a new copy by passing the altered state to the newCounter() 'constructor'-function. If you alter $state inside a method without returning newCounter($state), the origin...

I wrote this piece of code to append index to any duplicate entry in List<T> like in the sample below. Input ["dupe", "not dupe", "dupe", "also not dupe"] Output ["dupe1", "not dupe", "dupe2", "also not dupe"] But the problem is it's O(n^2) in the second loop and I'm working on a large lis...

I'm pretty new and I would like to know if I can make this code work faster. I created this code, and I would like to know if I can do something to get it going faster. Textbox2.Text like = 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 Textbox1.Text like = 1,2,3 / 2,3,4 / 5,6,7 and so on. ...

This is my implementation of CeWL, a ruby application that returns a list of words which can be used for password crackers. My main concern is performance, as it takes a couple seconds to run. I presume it's mainly within the get_words function. Any and all feedback and criticism is appreciated ...

I recently applied for a job as a C# developer in a software company. Based on the first phone call, they wanted to check my skills with a code interview in Java. Since i haven't programmed Java for years i tried my best and i'd like to submit my solution for review (for personal improvment), bec...

I am getting products using given parameters (name of real entity and columns changed for illustration purposes), public IQueryable<Product> GetProductsByPara(string price, string weight, string dimensions, string trend) { var result = dbContext.Products.Where(a => a....

A Python script to generate an image with a given number of digits from MNIST data on a single row. Via arguments, the following can be specified (all optional, with defaults if necessary): width of resulting image(s) minimum margin between digits maximum margin between digits number of MNIST ...

How could I modify this statement so I could move Where() condition which is related to products in FirstOrDefaultAsync method I've allready tried but it doesn't work because if I move it down than condition will become related to Brand class... var prod = await _context.Products.OrderByDescend...

I'm creating my own little toolbox for pinging IP (for the test, only in localhost). For now, scanning a class A IP range is pretty fast, but for a B range (65025 adresses) it's very long, Here is my code : #!/usr/bin/python3 import threading import os # Define a function for the thread def ...

This my code: let createOne = document.getElementsByClassName("butt")[0]; let menu = document.getElementsByClassName('topper-div')[0]; let cancel = document.getElementsByClassName('cancel')[0]; let apply = document.getElementsByClassName('apply')[0]; let titlee = document.getElementsByClassName(...

I have some scripts to automate software install, apply some configurations and so on after installing a new system. I used to have them as bash scripts but it was generally a poor idea. I have rewritten first segment into a ruby script. I am generally happy about it. But three global variables...

I am making a ros node to implement dijkstra's algorithm on a 1000x1000 pixel map. The map is in the form of a row dominant matrix and I have declared visited, distance and prev in the same form. Distance stores the distance of each index and is initially declared with a huge number. visited is...

i tried to make a callback type for embedded, i know std::function and lambda but i know that there is some dynamic memory allocation that i want to avoid, i came to thant implementation : #pragma once namespace interfaces { template <class returnType, class ... parameterType> class ICal...

I have written a recursive parsing algorithm for strings with nested brackets (I needed it to solve a molecules to atoms task). I would love to see how I could make it more idiomatic (I am a noob at Rust an exploring a lot of APIs and other people's code) and/or efficient. Here are some example...

For fun, I wrote a script to convert the last four digits (or fewer) of a phone number into a valid word. I wanted to see if my personal phone number could be converted into something like "999-9999-BEAR." I used the unix words file as my dictionary. I'm wondering how I could make this simpler, ...

I had wrote a shell script to add IP to Ubuntu method 1: ./script_name ip.txt method 2: ./script_name answer all question ask by script. script is printing IP on screen then select all IP and open interface file and append the IP. #!/bin/bash #add ip from file for ubuntu #add ip from range for ...

I currently have a very very basic js script that runs something 30 times per second. This is later to be used in a game engine. But now I'm not quite sure how I can best do that. This little script alone cost me some time to write. What could be improved here? function main() { var framera...

My code is working, however, in the foreach section, when it runs the invoke-command if I don't use "-ErrorAction SilentlyContinue" the red error text that states a computer cannot be connected to shows up. The code still works fine, I just wanted to know if there is a way to add "nicer" text, so...

I implemented a python Hash Table using only lists. Here is my implementation: class HashTable: # Initialize the table with a fixed size of 54 slots def __init__(self): self.Table = [None] * 54 def _get_value(self, key): #This is my hash function. # It finds the hash of every string. to...

my code: import matplotlib.pyplot as plt import numpy as np from sklearn.linear_model import SGDRegressor alpha_lst = [0.0001,1,100] outlier = [(0,2),(21, 13), (-23, -15), (22,14), (23, 14)] for i in range(len(alpha_lst)): plt.figure(figsize = (17,14)) k = 0 X= b * np.sin(phi) Y= a * np.cos(p...

I am trying to solve this question: https://www.codechef.com/problems/TADELIVE Andy and Bob are the only two delivery men of Pizza-chef store. Today, the store received N orders. It's known that the amount of tips may be different when handled by different delivery man. More specifically,...

Context This post will be related to the code request I asked for, some time ago. I would like to focus this time not strictly on the implementation of the SourceControl module, but rather on the Unit Tests. Link to the previous question can be found here. Dependencies To start working wit...

I'm trying to process a large dataset (300GB, myfile.txt in the script) line by line using multiprocessing. I want to define a 1% random sample based one variable (contained in unique_ids_final.txt). My first step is to define the sample and then I want to read the data file using multiprocessing...

I'm learning javascript with discord.js and node and I'm always looking for the "best" code. Is this the "best code" for my map() ? ([role] required, (role) optional) // Get [role] (@role) args let roles = msg.mentions.roles.filter(role => (args[2] === `<@&${role.id}>` || args[3] === `<@&${role...

I have this code: def has_divisors(n, i=2): """ Check if a number is prime or not :param n: Number to check :param i: Increasing value that tries to divide :return: True if prime, False if not """ if n <= 1: return False if i + 1 == n: return True if n <= 2 and n > 0: return True if ...

I often segment images by hand to generate training data for machine learning models. To this end, I created a little TkInter app that displays images and allows me to export labeled polygons to JSON. I'm looking for feedback on the design of the project and coding style. import tkinter as tk f...

I am trying to concat two huge dataframes (around 15GB) like the following: a_df: A B C D 2018-10-16 a16 b16 c16 d16 2018-10-17 a17 b17 c17 d17 2018-10-18 a18 b18 c18 d18 2018-10-19 a19 b19 c19 d19 2018-10-20 a20...