By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can
see that the 6th prime is 13.
What is the 10 001st prime number?
public class Problem7 {
public static void main(String[] args) {
// a prime factor is something that can divide by only 1 and itself eve...
I have a login method in my controller:
def login(conn, %{"login" => %{"password" => password}}) do
conn = conn |> fetch_session
count_attempt_login = conn |> get_session(:count_attempt_login) || 1
if count_attempt_login <= 10 do
if @password_login == password do
...
CRitter Collaboration
Choose a previous community challenge and work with someone(s) to complete it.
The only stipulation is that it must be something none of you have already submitted. Though interest in challenges may be high time can be scarce so this is a way to get more participation!
D...
Task is create Binary Search Tree from inorder and preoreder arrays and print them in level by level fashion(one level per one line) and below is my implementation
*****I am getting index of bound exception as below .
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 7
at...
First of all, it's not really a virus that is used to spy, or steal bank accounts. I don't even know if its a virus at all... I only made it to troll friends/people I know, and practice my programming skills. I will show you the code, than I will try to explain it a bit;
package pracatice;
impo...
Original Problem: HackerRank
I am trying to count the number of inversions using Binary Indexed Tree in an array. I've tried to optimise my code as much as I can. However, I still got TLE for the last 3 test cases. Any ideas that I can further optimise my code?
# Enter your code here. Read inpu...
I'm doing an exercise, and would like to know if what I'm doing is correct and follows the correct structure for rollbacking in case a transaction fails. I would like to know as well if my try...catch statements are well implemented. Here is my code:
create procedure spTeste2(
@tit1 bigint =...
Basically, here's the problem statement:
Given a List<T> source and List<T> exceptions, create a List<T> result which contains all of source, without exceptions, only omitting exact instances of a value. I.e.: if a value appears twice in source, but once in exceptions, then result will have t...
I'm writing an online classifieds website similar to craigslist. I use semantic-UI for the insert form. I'm still working on improved functionality such as dynamic options where the sub-category will expand to number of rooms and area for an apartment etc. But the code is live and you may look an...
There is luckily enough a Pokestop close enough to my workplace to check-in every few minutes. This yields me the necessary Pokeballs and experience, but my bag is getting full. I am only allowed to have 350 items. Are there rare items (so no Pokeballs) that I would miss out on with a full bag? I...
Please do not delete my Question. If it is in a wrong section, just tell me. I will move it to the other section.
First I am learning Haskell with the book Marco Block and Adrian Neumann. This is not a school lesson or something. So there are exercises, but not necessary. I hope i can receive h...
I've written a Ledger class for a daemon process, which is supposed to keep track of an exchange's orderbook. My main concern is the way I keep track of the orders - more precisely, the containers I use to store them: a combination of set() and dict() appeared like the most feasible solution.
Ho...
I use the gem act_as_votable to allow users to select categories they like. To get the categories a user likes:
current_user.get_voted(Category)
These categories have children categories, and I need to find the posts in those children categories.
I use this line to do it:
@categories_posts...
I was reading this code where author claims that its the fastest implementation which I doubt, hence I decided to write my version of the same problem.
'use strict';
module.exports = function unique(arr) {
if (!Array.isArray(arr)) {
throw new TypeError('array-unique expects an array.');
...
My code given below will produce the correct output but it tends to take way too much time with larger data thus timing out for some of the test cases. I've linked to the problem description here
Given below is my code. Any help/advice/suggestion is welcome
#!/bin/python3
import sys
inp0 = ...
var argon2 = require('argon2')
var nano = require('nano')('http://127.0.0.1:5984')
var users = nano.db.use('users')
var private = {
generateHash: (password, callback) => {
argon2.generateSalt().then((salt) => {
argon2.hash(password, salt).then((hash) => {
callback(hash)
...
I'm learning Ruby 2.3 and I've tried to implement a function which performs the Luhn credit card verification algorithm on an input string, returning true if it matches and false if it doesn't.
def luhn(card_no)
card_no.split("") # Break into individual digits
.reverse # Start f...
i need code review for my first jQuery plugin. Maybe it's a lot of code)
I want to hear something about my plugin code structure and more. Thanks.
;
(function($) {
'use strict';
$.fn.mpopup = function(options) {
//Default settings
var defaults = {
overlayClass: 'mpopup-o...
login page with session using PDO
index.php,general message.php, logout.php, site life.php (this page for session and put it in the other pages by required )
connection.php
<?php
$dsn = "mysql:host=localhost;dbname=mg";
$username = "root";
$password = "";
$options = array(
PDO::MYSQL_ATTR_I...
I'm working through Cracking the Coding Interview. The first challenge is to implement an algorithm to determine if a string has all unique characters.
I've gone through several iterations, but here's my "final" solution. I've made several assumptions:
We are considering case-insensitive strin...
This is my first Python project, so:
create a pot with dimensions (radius, thickness of wall, thickness of base, height), fill it with food (to a specific height). Determine the ratio between the volume of the food and the volume of the (metal in the) pot.
I am aware that this code does not tak...
I am creating a php app in MVC (no framework).
I am having a difficult time understanding how the Model and the Controller communicate in an optimal manner.
Let me first give you the code:
User.php
<?php
/**
* Created by PhpStorm.
* User: antony
* Date: 7/7/16
* Time: 1:17 PM
*/
namespac...
I've been experimenting with how to pass my managed object context throughout my application in Core Data and I came across an approach that I'd like reviewed.
I've been creating a protocol for all of my View Controllers that need a managed object context to implement.
protocol ManagedObjectCon...
I already have two versions of this code reviewed (thanks @Bobby).
They can be found here and here.
The question is still the same.
The goal is maintainability and following best practices.
Jar.java
package com.tn.jar;
import java.util.Random;
public class Jar {
private String itemNam...
I have the following snippet code which, within a loop, creates a JavaScript object where some of the properties maybe undefined:
reader.on('record', function(record) {
let p = record.children;
let player = {};
// below we create a dy...
I have a class (Patient) with many instances.. I need a way to share the instances with other users, so I thought of converting the instance into a string and sharing it, then reconverting it into an instance
From instance to string
func ToString(pt: Patient) -> String {
let myarray: [Strin...
Overall your code looks okay, nothing much to comment on it as a whole. I'd like to add the following comments though:
The variables in your Jar class should be final where possible, I would change them to the following:
private final String itemName;
private final int numberOfItems;
private f...
