Mandelbrot Java

// by Erik Wrenholt import java.util.*; class Mandelbrot { static int BAILOUT = 16; static int MAX_ITERATIONS = 1000; private static int iterate(float x, float y) { float cr = y-0.5f; float ci = x; float zi = 0.0f; float zr = 0.0f; int i = 0; while (true) { i++; float temp = zr * zi; float zr2 = zr * zr; float zi2 = zi * zi; zr = zr2 - zi2 + cr; zi = temp + temp + ci; if (zi2 + zr2 > BAILOUT) return i; if (i > MAX_ITERATIONS) return 0; } } public static void run2() { int x,y; for (y = -39; y < 39; y++) { System.err.print("\n"); for (x = -39; x < 39; x++) { if (iterate(x/40.0f,y/40.0f) == 0) System.err.print("*"); else System.err.print(" "); } } } public static void run() { Date d1 = new Date(); for (int i = 0; i < 100; i++) run2(); Date d2 = new Date(); long diff = d2.getTime() - d1.getTime(); System.out.println("\nJava Elapsed " + diff/1000.0f); } public static void main(String args[]) { run(); run(); run(); }

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