/* Reference : https://en.m.wikipedia.org/wiki/Conway%27s_Game_of_Life Challenge by bell https://www.sololearn.com/post/398851/?ref=app The Game of Life: apply the rules of this cellular automaton to calculate the fate of one of the five motifs proposed in the attached code https://code.sololearn.com/WbfWtl76AN2D/?ref=app */ public class Universe{ //Enum to indicate states of cells life //DEAD - cell is dead //ALIVE - cell is alive //REVIVING - cell was dead but at end of // this tick it'll be alive //DYING - cell is alive but at end // of this tick it'll be dead private enum Lifestate{ DEAD, ALIVE, REVIVING, DYING } private Lifestate[][] cellGrid; private int height; private int width; private int generation=0; //constructor //initializes all cells to be DEAD public Universe(int height,int width){ this.height= height; this.width = width; cellGrid = new Lifestate[height][width]; for(int i=0;i=height || y>=width) return false; if(cellGrid[y][x]==Lifestate.DEAD || cellGrid[y][x]==Lifestate.REVIVING) return false; return true; } //count live neighbours of a cell private int liveNeighbors(int x,int y){ int neighbors = 0; for(int n : new int[]{-1,0,1}) for(int m : new int[]{-1,0,1}) if(isAlive(x+m,y+n)) neighbors++; //don't count a cell as its own neighbor if(isAlive(x,y)) neighbors--; return neighbors; } //births and deaths occur simultaneously, //and the discrete moment at which this //happens is sometimes called a tick // ~ Wikipedia public void tick(){ for(int row=0;row void println(T arg){ System.out.println(arg); } } public class Game{ private final static int[][][]pentominos; public static void main(String[] args){ var universe = new Universe(10,10); try{ var cin = new java.util.Scanner(System.in); //pentomino's number int n = cin.nextInt(); if(n<1||n>5) throw new IllegalArgumentException(); start(universe,n); }catch(Exception e){ int n = new java.util.Random().nextInt(5)+1; println("Input expected "+ "to be an integer in range 1 - 5"); println("Using random value : " + n); start(universe,n); } } static void start(Universe u,int pentoNum){ switch(pentoNum){ case 1: println("first pentomino"+ "becomes oscilator"); u.fill(pentominos[0]); u.run(10); break; case 2: println("second pentomino "+ "dissapears"); u.fill(pentominos[1]); u.run(10); break; case 3: println("third pentomino "+ "becomes a still life"); u.fill(pentominos[2]); u.run(10); break; case 4: println("fourth pentomino "+ "becomes an oscillator"); u.fill(pentominos[3]); u.run(10); break; case 5: println("fifth pentomino "+ "walks away"); u.fill(pentominos[4]); u.run(10); break; default: println("This pentomino "+ "doesn't exist ^^"); } } static{ pentominos = new int[][][] { { {1}, {1}, {1}, {1}, {1} }, { {1,1}, {1,1}, {1,0} }, { {1,0,0}, {1,0,0}, {1,1,1} }, { {0,1,1}, {1,1,0}, {0,1,0} }, { {1,1,0}, {0,1,1}, {1,0,0} } }; } public static void println(T arg){ System.out.println(arg); } }

Conway's Game Of Life