I am solving https://projecteuler.net/problem=32
I have decided to try brutal force approach; find all the combinations of 1,2,3...9 then see if the pattern A * B = C occurs.
I have list [1,2,3,4,5,6,7,8,9]
I want all the possible combination of these elements. The following loop should give m...
Please review my implementation of mergesort:
mergesort' :: (Ord a) => [a] -> [a]
mergesort' [] = []
mergesort' xs = merge' (sort' fst', sort' snd')
where fst' = take half xs
snd' = drop half xs
half = len `div` 2
len = length xs
merge' :: (Ord a) => ([a], [a]) -
I can imagine this situation coming up frequently on this site. What should we do when there are multiple helpful valid answers?
Accept the one we think is most helpful?
Accept the one that was posted first?
Accept neither?
Accept the one with the most upvotes?
I think we should have a docum...
Lack of voting has already been identified as an issue that prevents the site from graduating. I'm shamelessly stealing this post from Meta Biblical Hermeneutics, hoping it will inspire all of us to be a bit more active with our votes. Enjoy! And vote!
I cannot state this strongly enough. Voti...
I'm writing a program which determines how many bits are in
a floating point value - (this will be run on unix).
#include <stdio.h>
#include <stdlib.h>
void countbits(int k);
int main(){
int input;
// int a = (int) malloc(sizeof(int));
printf("Please enter a number: ");
scanf(...
This Is my first attempt at a login system! I've only had roughly 2 days of experience with mysql and php so far and this is what I came up with:
<?php
session_start();
//Start Database
$IP = "";
$user = "";
$pass = "";
$db = "";
$con = mysqli_con...
So the code below i have written in order to generate a 9x9 sudoku puzzle by shift the 1-9 numbers 1 space over each row, Basically i wanted to write a more concise and efficient code so that i did not have to do 9 for loops,
MY ORIGINAL SUDOKU CODE:
#include <stdio.h>
int main () {
int i, j,...
A few days ago I managed to finish the core of the engine for a game that I am making but unfortunately the performance is quite bad. This is the first time I am writing something like this and I would really appreciate it if someone could take a look and specify where I could improve things a bi...
Now, I was writing an algorithm in JavaScript... Here's an example in pseudo-code:
a = "2-9";
b = "";
The end result is:
a = "2";
b = "9";
It should also work with multiple digits:
a = "2332-377";
b = "";
End result:
a = "2332";
b = "377";
Here's the whacky code I got out:
<!DOCTYPE ...
This question is a followup from my previous question My EventBus system, and incorporates most points from @rolfl's answer.
It includes, but is not limited to:
Usage of Collections.synchronizedSet over manual synchronized { } on trivial methods.
Minimal locking
High performance code, but not ...
Below is the code that I've written for matrix multiplication:
import java.text.DecimalFormat;
import java.util.InputMismatchException;
import java.util.Scanner;
public class MatrixMultiplication {
private static final String TERMINATED_MESSAGE = "Terminated" + "," + " ";
private stati...
While I know you can attribute 'bitch' to a male, I feel there is a sense of femininity.
I was wondering if there is a colloquial equivalent that describes someone with the qualities of a 'bitch' without the feminine connotation.
Also Wikipedia says that,
When applied to a man, bitch is a...
What is wrong with my calculate function?
All other functions work fine but when I try to calculate a post fix expression, it adds some weird symbols to my stack.
void push (char operand)
{ ++top;
stack [top] = operand;
printf("Stack: %s \n", stack);
}
int ...
I'm reasonably new to Java, and have worked my way through a couple of books including Java concepts by Cay Horstmann. I'm just starting to look at writing the GUI and had a few questions I hope you guys could help me with.
Should i be using a timer based render system for menus? Or should the...
I wrote a short program for my exercise routine. It takes a JSON array of exercise names and duration (seconds) and puts it on the screen. The JSON looks like this:
var exerciseArray = [
{
"desc": "Pushup/Pullup",
"countdown": 30
}, {
"desc": "Squat p...
I'm not going to make a big answer.
Take a look at this post of stackoverflow.
There are several ways how you can iterate over your jsons and after your iteration you can do the clearInterval(tt);
I was tasked with making a program that uploads a csv to a nosql cluster. We were doing 2-5 gig files, and it was taking 4-8 hours. Well when we hit 17 gig files that was just to slow.
When I remade my program I realized working in batch made is much much faster. I could get a 17 gig file done ...
Firstly, as usual, this answer assumes anyone reading this already saw Simon's answer.
MVC Architecture Issues
The problem with this design:
public interface HandView extends View<Hand> {
//... some handler methods
}
apart from being just confusing, is that it violates Interface Segrega...
Meme: LOL - AutoStar
Originator: Mat's Mug / Jamal
Cultural Height: The 2nd Monitor
Background: "lol" somehow got targeted at this point here (the first starred lol):
retailcoder: lol (darn, again)
Followed shortly by:
Jamal: lol (don't star that)
And then the tradition was cement...
I have small doubt which is the best way to handle string in below scenario:
Am i creating too many instance of string is it right way to do in the loop
import java.util.HashMap;
public class StringHandle {
HashMap<String,String> records = new HashMap<String, String>();
private...
User experience bugs
The UI is entirely console-based — except that errors are reported in a Swing message dialog. That's bizarre.
The user has no way of knowing that the program only accepts fully spelled out month names, not numbers or abbreviations.
The blank lines in the output result in e...
