conways-game-of-life

I have spent quite a while trying to write a program to implement Conway's game of life - Link with more info. . I am following some online guides and was given the majority of the functions. I wrote the "next" and "neighbours" methods shown below. Could anyone tell me if these are good implementations, and how they could be made better please ? The point of the exercise was to not modify or change any of the other methods and just write the next method ! :) import java.io.*; import java.util.Random; public class Life { private boolean[][] cells; public static void main( String[] args ) { Life

I was trying to solve the Game of life problem for a test. Rules of that game are: Any live cell with fewer than two live neighbors dies, as if caused by under-population. Any live cell with two or three live neighbors’ lives on to the next generation. Any live cell with more than three live neighbors dies, as if by overcrowding. Any dead cell with exactly three live neighbors becomes a live cell, as if by reproduction. I tested my work on various patterns like Block, Boat, Blinker and Toad pattern shown below. But my code is not giving expected output for toad pattern as shown...although its

Below is a (very naive) implementation of Conway's Game of Life in WPF. It's just a demo... xaml: <Window x:Class="wpf_conway_life_2013_05_19.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="500" Width="500"> <Grid> <Canvas Name="canvas" Width="auto" Height="auto" HorizontalAlignment="Stretch" VerticalAlignment="Stretch"> </Canvas> </Grid> </Window> code behind: using System; using System.Windows; using System.Windows.Controls; using System.Windows.Media; using System.Windows.Shapes;

I want a twodimensional array in Ruby, that I can access for example like this: if @array[x][y] == "1" then @array[x][y] = "0" The problem is: I don't know the initial sizes of the array dimensions and i grow the array (with the << operator). How do I declare it as an instance variable, so I get no error like this? undefined method `[]' for nil:NilClass (NoMethodError) QUESTION UPDATED: @array = Array.new {Array.new} now works for me, so the comment from Matt below is correct! I just found out the reason why I received the error was because I iterated over the array like this: for i in 0..