So I'm starting to learn Java (started with C++), and still getting to get used to the syntax and whatnot. For practice, I made a doubly-linked list program. Below is my attempt. Any way this could be improved at all, or is this okay code?
// Doubly Linked-List Practice
package doublylinkedlist;...
I'm trying to solve LeetCode #347. Top K Frequent Elements. I know of a few approaches to this problem, but I'm trying to do it the following way.
1) Take the input array, for example: [1,1,1,2,2,3]
2) Create a map of the integer->frequency of its appearance, ie. {[1, 3], [2, 2], [3, 1]}
3) Cr...
I am solving another problem from leetcode. I am able to come up with recursive solution. However, I cannot come up with iterative solution using stack. I can do tree traversal in iterative manner but this particular problem is not that intuitive for me. Thanks in advance.
Problem Statement:
Gi...
So I'm creating a connect four game, and I've pretty much got it right up to the bit where I need to be able to tell if there is a diagonal "four in a row".
The first part of the diagonal code works fine but the second part (labeled below) always outputs "True" regardless of whether or not ther...
I want to create API wrapper which would allow me to send request to site. I want to start with login page. To login I have to send 3 requests. Each request without first is using data from previous request response.
For example:
I send request and I got token in response
I use this token to s...
Hi everyone I have this simple fullwidth dropdown menu.
In you click second button from left dropdown will shown.In site I have multiple dropdown's (that bounded to id "artist" "cooper" "about" "media") that's why you can notice multiple id in my jQuery code.
My question is this is possible k...
I'm trying to decrypt a message using a public key:
I know that is not the standard but in my case the encryption is done with a private key and decryption with a public key. Server encrypts data, sends it to clients. Clients have public key, and can decrypt data from the server.
-----BEGIN PUB...
I have the following enum:
public enum PartLayer implements IPartID // Tells the order in which the renderer draws the textures associated with each value.
{
BODY, // renders first
MASK, // renders second
WHEEL, // renders third
TIRE, // renders fourth
BODY_PART; // renders a...
I wrote 3 benchmarks to check how fast if statements can be handled by Golang and ANSI C respectively. I was trying to keep the same schema overall solutions.
Solution in ANSI C is follwing:
#include <stdlib.h>
#include <stdio.h>
#include <time.h>
void bench(void (*f)(int));
void if_func_1(int...
I have implemented a complex string calculator in Java and just wanted to get your opinion on it and find places where I can improve.
The application is running in Spring Boot.
Example input: "1+(2*3)"
Service class which executes all the logic in my program. String is taken in and spaces are ...
This is not my solution but that of an existing application I am enhancing.
Basically what they are doing is annotating a Form.java with a custom validator that does all trivial + business logic validation
@MyCreateFormValidator // which contains business logic validation
// validator uses Serv...
Ten years ago, a lot was happening. Barack Obama and John McCain were running for U.S. president. Lehman Brothers’ collapse triggered a global financial crisis. The second iPhone came out – with 3G speeds, y’all! Tweens everywhere were deciding if they were on Team Jacob or Team Edward. Kanye West convinced everyone that what sunglasses had been lacking were venetian blinds.
And on September 15, 2008, Stack Overflow’s public beta went live.
Stack Overflow’s home page in 2008
Since then, 9.3 million users have provided 25 million answers to 16 million questions. Every 5.1 seconds, someone ta …
In the Elm examples I have seen for form handling, they attach each input element with an update handler that sends out a very specific message to update the model according to the new input state.
So you end up with a lot of message definition in your Msg union type.
Alternatives I have seen f...
I'm trying to optimize the bottleneck part of my software. The application is written in pure Python 2 with calling some Cython functions.
Here is the code of Cython function which is called more than million times:
def RNHS_fast(set myset, dict dict_of_lists, int min_matched):
cdef int mab...
I have the following javascript function validateEmail(value). The goal of the function is to validate the users inputted email as they are typing. So if someone puts nfg@*gmail.com the email will be displayed with the * char crossed out. Anytime there is an invalid character the display will sho...
Warning
Wall of text, little bit of code. This question is about as much as introducing the language as it is about whether or not I still know how to write the language.
Introduction
Programmable Logic Controllers (PLCs) are industrial, heavy-duty computers used to control (semi-)automated ...
I have some code in a R Markdown report where I need to perform a certain action if test_A is true, another if test_B is true, and stop for failure if both are true. According to the principle "return early", I wrote
test_A <- TRUE
test_B <- FALSE
if (test_A & test_B) {
stop("both test_A and ...
The code below asks the user for a path, ingests all csv files and writes each of them to a sheet in a single xlsx file.
The problem is, every time I run this for the first time, it returns an empty xlsx file with one sheet (Sheet 1). By first time, I mean when I start RStudio with a clean work...
I'm looking to improve my coding skills. I am new to programming, and after weeks of research and trial and error - I have successfully wrote this basic program to find a music scale by inputting a Root note and Scale.
Since I am pretty much teaching my self - I am looking for criticism to impro...
<?php
require_once '../db.php';
session_start();
// Check if user is logged in using the session variable
if( $_SESSION['logged_in'] != 1 ){
$_SESSION['message'] = "";
header("location: error.php");
} else {
$username = $_SESSION['username'];
}
//here starts the code to insert data...
I am in charge of covering a Command in Symfony 3.1 with tests. When I found the class, lots of places used exit(0) after some validation failed:
if ($date->getTimestamp() > $now->getTimestamp()) {
$output->writeln('Unable to proceed date: ' . $input->getOption('date'));
exit...
I'm trying to read two sufficiently large binary files, comparing them and printing the offset at which they differ. I'm using fread to read the binary files and memcmp to compare them.
#include<stdio.h>
#include<time.h>
clock_t start, end;
int main(int argc, char *argv[])
{
double cpu_time...
How to refactor this conditions to make simpler and cleaner? Logic is different for each if.
if(in_array($sides, [self::ALL_SIDES, self::HORIZONTAL_SIDES, self::TOP_SIDE])) {
}
if(in_array($sides, [self::ALL_SIDES, self::HORIZONTAL_SIDES, self::BOTTOM_SIDE])) {
}
if(in_array($sides, [self::A...
This is not a "please do my homework" question. I solved a problem two ways and would like to know which solution is better; better being defined by better readability, lesser complexity and lesser memory consumption. I'd also like to note that this is a not a homework assignment but an optional ...
I'm trying to program a board game called Djambi, most of its pieces can move like the queen from chess. I created a list to save all valid destinations of a piece, which can be in 8 different directions, so I used 8 for loops, but the code of each loop is almost identical:
This is the loop for ...
This is a CLI utility for managing the allocation of investment. It's an exercise, don't take it too seriously. So the utility asks the user a series of questions about it's finances and suggests a balanced investment profile. This was supposed to be a marathon script, however due to a bug, marat...
I've been learning web development for a while now and this is my first real application.
It's an application you can visit when you're looking for a place to hang out, meet some friends or work.
The idea is that you can make an account (using your e-mail address or Facebook) and view places (C...
