Introduction
This problem is essentially equivalent to this HackerRank problem.
The task is to remove all duplicate characters that are adjacent to each other in a given String, until no adjacent characters are the same. If a String only contains adjacent duplicate characters then return an emp...
Problem
In the famous eight queens puzzle, one must place eight queens on a chessboard without letting any queen threaten any other queen. There are 92 (or 12, depending on how you count) solutions to the original puzzle, but it can also be generalized to smaller or larger boards.
Solution
My ...
I want to open a file with the user's username, which the user need to input to open. Now the compiler doesn't say there's an error, but the file just won't open.
#include <iostream>
#include <windows.h>
#include <fstream>
#include <string>
using namespace std;
void title();
string username,...
Where should I put my mirror?
code-golf string palindrome
This is a mirror: |. I just found out that you can stick a mirror in the middle of a string if the string can be mirrored on itself! For example, the string abccba. If you cut it in half the two halves are mirror images of each other:
...
We've just gotten the July 2016 Community Challenge going, so it's time to pick one for August.
It's time to choose a community-challenge for August 2016.
Post your challenge as an answer to this question. Feel free to resubmit non-winning ideas from previous months.
Vote for those answers w...
I just finished writing my own backend framework and am looking for a bit of feedback. It uses an MVC pattern and I wrote it because I couldn't find a framework that does, out of the box, what Pixull does.
The website is pixull.com and any reviews would be greatly appreciated.
In some code that I am writing, I am manipulating some heterogeneous containers of user-defined types.
I desperately need to be able to move assign these types without generating exceptions.
However, this can cripple the usability of my code because many standard library types do not have noexc...
I made a triple-type container, that is, a single type that can store a value, under one of the three types used. It's somewhat similar to Boost::Variant.
The header file (multitype.hpp):
#ifndef MULTITYPE_HPP
#define MULTITYPE_HPP
#include <iostream>
#include <cstdlib>
#include <typeinfo>
ty...
For fun I decided to write a 'real' Haskell program. The intention of the program is that it listens on a socket on a given port for input. The client can send some raw text on it and the server generates a paste for it.
As an example:
Client
dino :: ~ % echo "Schoolbus" | nc call-cc.be 9999
h...
So I'm trying to write a program that will create a gap at the specified file number, e.g. if the current files are
spam001.txt
spam002.txt
spam003.txt
and I specify 2 in the argument, then it will become:
spam001.txt
spam003.txt
spam004.txt
The code below seemed to work, until I tried adding...
I made a Blum Blum Shub pseudorandom number generator implementation in JavaScript.
Blum Blum Shub (B.B.S.) is a pseudorandom number generator proposed in
1986 by Lenore Blum, Manuel Blum and Michael Shub that is derived
from Michael O. Rabin's oblivious transfer mapping.
Blum Blum S...
I currently use this method to count unread messages for a user (self here):
def unread_messages_count
number = 0
conversations = Conversation.where {|conversation| conversation.user1 == self || conversation.user2 == self }
conversations.each do |conversation|
number += conversation.m...
The filenames.txt contains all the names of the files that you want to change in a given directory.
It is generated by:
import os
walk = os.walk("./app/")
for dirpath, dirs, files in walk:
for filename in files:
fpath = os.path.join(dirpath, filename)
with open("filenames.t...
I know B-Trees are meant to be used for external memory, but I implement it to understand the algorithms involved in insertion and deletion. Also I didn't used a vector because I was ask no to use it (I will probably reimplement this using vectors later).
Code:
namespace mds {
template<type...
I am working on a project for Udacity, where I should use CSV files to display data on fake corporate dashboard. Structure of the data I am working on is like this:
I am using AngularJS for this project, I created service for getting the data, formatting it to JSON and summarizing data into mont...
That's already known problem: to return an array of linked lists that contain values of elements at each level. Eg for tree with depth n there should be n linked lists.
I wrote the solution:
public ArrayList<LinkedList<Integer>> levelLists() {
class NodeLevel {
public BinaryTreeNode ...
So this is the code of the ball I've written. I want to increase the speed of the ball every time i click it. Please help me to do it.
import java.awt.*;
import java.util.Formatter;
import javax.swing.*;
public class BouncingBallSimple extends JPanel {
private static final int BOX_WIDTH = 6...
