Top new questions this week:

Tokenizer for my programming language

Here's my attempt at porting the Lua codebase for my programming language to C++(11). This is just the first step, the tokenizer, and I wanted to remove all the bad performance / practices / code ...

c++ c++11 language-design lexical-analysis

asked by user6245072 12 votes answered by Loki Astari 5 votes

All the knight moves in all the right places

Challenge Find all possible moves for a knight on an empty chessboard. Specifications The first argument is a path to a file. The file contains multiple lines. Each line is a test case ...

beginner c programming-challenge

asked by Legato 9 votes answered by I'll add comments tomorrow 13 votes

Finding an element in an array that occurs a given number of times

I am trying to solve the below problem from an online coding site: Fredo is pretty good at dealing large numbers. So, once his friend Zeus gave him an array of N numbers, followed by Q queries ...

python programming-challenge python-2.7 time-limit-exceeded

asked by krishna 7 votes answered by Mathias Ettinger 7 votes

Velocity, Distance and Time Calculator

This is a velocity, distance, and time calculator that I wrote not too long ago. How can I improve upon this code? import java.util.Scanner; import javax.swing.JOptionPane; //imports ...

java beginner swing calculator

asked by SeanJ 7 votes answered by 200_success 10 votes

Print matrix diagonals method

I need to print (or store) all diagonals of a matrix. This includes the main diagonal ( { (i,i) | i = 1, 2, ... min(m,n) } ). Then all super and sub diagonals. For example: 1 2 3 4 5 6 7 8 ...

python python-3.x matrix

asked by pmdaly 7 votes

Hash map implementation

I'm a student in college, and while I have coded a lot, I still feel like I've only scraped the surface. I have learned a lot of things over the years, but very few of my professors ever did code ...

c hash-map

asked by Argus 7 votes answered by pacmaninbw 3 votes

Streaming a Pin functionally(ish)

Earlier today I wrote a question (Validating a StreamingPin) and I thought it was a good idea (apparently I was the only one who thought so, but whatever), so I proceeded further with it and developed ...

.net security validation f#

asked by EBrown 6 votes

Greatest hits from previous weeks:

Monopoly simulator

I was advised by a Reddit user to get my code reviewed on this site. The complete code is on GitHub. # Monopoly Simulator # http://img.thesun.co.uk/aidemitlum/archive/01771/Monopoly2_1771742a.jpg ...

python beginner game python-2.7 dice

asked by ohjuny 47 votes answered by Joe Wallis 60 votes

Snake game in C++

This is my version of the Snake game, written in C++. How could it be improved, and what general advice would be useful for future projects? #include <iostream> #include <conio.h> void ...

c++ beginner game snake-game

asked by TheKittyKat 25 votes answered by Yann 23 votes

Can you answer these?

Generating large Sudoku grid in C#

I'm new to C# and am trying to write a program that randomly generates complete Sudoku grid of variable size. I'm able to generate a 25x25 grid in usually less than 10 seconds but I haven't been able ...

c# beginner sudoku

asked by Aaron Allen 3 votes

Python push notifications - How to make password secure

I have built a tiny script to send out push notifications. I would be glad to receive general suggestions / feedback. My main problem is that the only security offered is coming from the o.s. ...

python

asked by Pitto 2 votes

Android generic SQL database handler

Starting with the fact that creating the classic database handler in Android is really annoying and it usually takes a lot of time since you have to create one handler for each object, I thought at ...

java performance android sqlite

asked by Pier Giorgio Misley 2 votes