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  1. import java.util.*;
  2.  
  3. class Main
  4. {
  5.     public static void life(int a[][], int b[][], int m, int n) {
  6.         for (int i = 0; i < m; i++) {
  7.             for (int j = 0; j < n; j++) {
  8.                 int sum = 0;
  9.                 for (int k = -1; k <= 1; k++) {
  10.                     int I = i + k;
  11.                     if (I == -1) { I = m - 1; } else if (I == m) { I = 0; }
  12.                     for (int l = -1; l <= 1; l++) {
  13.                         int J = j + l;
  14.                         if (J == -1) { J = n - 1; } else if (J == n) { J = 0; }
  15.                         sum += a[I][J];
  16.                     }
  17.                 }
  18.                 if (sum == 3 || (sum == 4 && a[i][j] == 1)) {
  19.                     b[i][j] = 1;
  20.                 } else {
  21.                     b[i][j] = 0;
  22.                 }
  23.             }
  24.         }
  25.     }
  26.     public static void main(String args[])
  27.     {
  28.         int size = 500;
  29.         int a[][], b[][];
  30.         a = new int[size][size];
  31.         b = new int[size][size];
  32.         Random r = new Random();
  33.         for (int i = 0; i < size; i++) {
  34.             for (int j = 0; j < size; j++) {
  35.                 a[i][j] = r.nextInt(2);
  36.             }
  37.         }
  38.         for (int n = 0; n < 50; n++) {
  39.             life(a, b, size, size);
  40.             int tmp[][];
  41.             tmp = a; a = b; b = tmp;
  42.         }
  43.         /*
  44.         for (int[] x : a) {
  45.             for (int n : x) {
  46.                 System.out.printf("%d,", n);
  47.             }
  48.             System.out.println("");
  49.         }*/
  50.     }
  51. }
Success #stdin #stdout 0.95s 245824KB
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stdout 
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https://ideone.com/oLyyb
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
secret

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