A permutation is an ordered arrangement of objects. For example, 3124 is one possible permutation of
the digits 1, 2, 3 and 4. If all of the permutations are listed numerically or alphabetically, we call
it lexicographic order. The lexicographic permutations of 0, 1 and 2 are:
012 021 102 ...
public interface IMappingRuleFactory
{
IMappingRule Create(string mappingRuleName, dynamic parameters);
}
Interfaces.IMappingRule:
public interface IMappingRule
{
void Execute();
}
In your API, create a MappingRule folder/namespace. Implement the factory, e.g.,
public class MappingR...
I am facing difficulties of converting rand() % TDx.size() in c++ to java.
I convert this as
Random r=new Random();
int j=r.nextInt(TDx.size());
But,this works sometimes and sometimes not.
I exactly convert c++ to java like this.
int j=(int)(Math.random() % TDx.size());
But,it causes my ...
I'm parsing STL files to load the coordinates. My code is:
void Importer::scanFileSTL_ASCII(
QVector<QVector3D> &vertices, // Coordinates to be filled
const QUrl &url)
{
QFile file;
file.setFileName(url.toLocalFile());
if (!file.open(QIODevice::OpenModeFlag::ReadOnly | QIODe...
I have written out the following code to upload image files to a directory called Uploads on my website server, the image upload part is working and has been tested(So this is working code). But I have a couple of questions or problems.
1st) currently if a file has an extension that is upper cas...
I would like to write a little pet project using Clojure to study it, something like StackOverflow client.
Here is a my first code to get list of new questions from site. I am in the very beginning in Clojure so any help will be appreciated.
core.clj:
(ns stackify.core
(:require [clj-http.c...
create a function which predicts the next time a satellite image will be taken of a certain location.
When there is enough data to do so, the function should print a prediction for when the next picture will be taken.
and when there is no enough data then return error.
if prediction date is less...
hello i'm using fullcalendar and i want to declare event.date as a variable to use it like this:
$sql = "SELECT * FROM chambre
WHERE id NOT IN
(SELECT id_chambre FROM reservation_client where start <= event.end AND end >=event.start)";
is it possible to mix between JavaScript and php like ...
When I go to import numbers, it says some numbers are false when they should be true or viseversa. For example, when I put in -3, 4, -5 it comes out as true when it should be false.
public class RightTriangle {
public static void main(String[] args) {
int a = Integer.parseInt(args[0]...
I have to replace multiple substrings from a string (max length 32 of input string). I have a big dictionary which can have millions of items as a key-value pair. I need to check for each word if this word is present in the dictionary and replace with the respective value if present in the dictio...
I have the following code that I wrote in order to find the correct password by generating hashes out of all possible combinations and comparing it with the target. I'm trying to make GetPasswordFromHash() as efficient as possible, in regards to multi-threading, and I've decided to pick PLINQ for...
I'll have to make the following algithm more efficient. The train data set can include up to 20000 point. The test data set has 5000 points.
At the moment the algorithm need up to 10 minutes.
import numpy as np
import time
class Node():
def __init__(self, point):
self.point = point
...
This is an OOP version of Lastest version of my Blackjack game. Also, it now uses PostgreSQL as database.
import random
import typing as t
from enum import Enum
from functools import partial
import os
from getpass import getpass
from re import match
import bcrypt
import psycopg2
import attr
lo...
My Android app must request my Cloud Functions server to create in-app purchases at runtime ; then, the server responds with the created one-time product. I've written the server Cloud Function that creates the product. Here is how it works (full minimal, executable code is embedded at the end of...
This is my first experience of designing classes with inheritance. I would like to get feedback on the interaction between the presented classes. It is unlikely that this code will seem complicated. But if you need a description of it, please specify in the comments.
There are several classes th...
I'm attempting a practice problem in Codeforces that requires you to find the number of multiples of 3 less than a given number. I have written the following code but it gives a TLE once the test case reaches the order of 10^8.
int x = Reader.nextInt();
int count = 0;
for(int i = 3; i<=x; i++){...
I have this, I guess, new Ruby syntax in my method but Rubocop are warning me that the second last line is too long. Could you please help me to refactor this method
def show
identification_document = IdentificationDocument.find(params[:id])
authorize identification_document
return unless ...
