/** * Generate the challenge string. * * @return a generated nonce. */ public String generateNonce() { // Get the time of day and run MD5 over it. Date date = new Date(); long time = date.getTime(); Random rand = new Random(); long pad = rand.nextLong(); String nonceString = (new Long(time)).toString() + (new Long(pad)).toString(); byte mdbytes[] = messageDigest.digest(nonceString.getBytes()); // Convert the mdbytes array into a hex string. return ProxyUtilities.toHexString(mdbytes); }
public double runTest(String exec, String seed) { try { this.exec = exec; readFiles(); Random r; try { r = SecureRandom.getInstance("SHA1PRNG"); r.setSeed(Long.parseLong(seed)); } catch (Exception e) { return -1; } P = r.nextDouble() * 0.04 + 0.01; C = r.nextDouble() * 1e-3; String[] medkit = getMedkit(availableResources, requiredResources, missions, P, C); if (medkit == null) { System.err.println("Got null"); return 0; } double[] mk = new double[10000]; for (int i = 0; i < medkit.length; i++) { String[] sp = medkit[i].split(" "); if (sp.length != 2) { System.err.println("Invalid return. Element not formatted correctly: " + medkit[i]); return 0; } try { int rid = Integer.parseInt(sp[0].substring(1)); double cnt = Double.parseDouble(sp[1]); if (cnt < 0 || Double.isNaN(cnt) || Double.isInfinite(cnt)) { System.err.println("Your return contained an invalid double"); return 0; } mk[rid] += cnt; } catch (Exception e) { System.err.println("Invalid return. Element not formatted correctly: " + medkit[i]); return 0; } } String[] sample = missions; int[] used = new int[100000]; ArrayList<String[]> al[] = new ArrayList[10000]; Arrays.fill(used, -1); for (int i = 0; i < 10000; i++) { al[i] = new ArrayList(); int j = r.nextInt(used.length); while (used[j] != -1) { j = r.nextInt(used.length); } used[j] = i; } for (int i = 0; i < sample.length; i++) { String[] sp = sample[i].split(" "); int mid = Integer.parseInt(sp[0]); if (used[mid - 1] != -1) { al[used[mid - 1]].add(sp); } } int evac = 0; for (int i = 0; i < 10000; i++) { double[] m = (double[]) mk.clone(); evac += eval(m, al[i]); } System.err.println("Total evacuations: " + evac + "\n"); if (evac <= P * 10000) { double score = 0; double m = 0, v = 0; for (int i = 0; i < mk.length; i++) { m += mass[i] * mk[i]; v += vol[i] * mk[i]; } score = C * v + m; System.out.println("Total mass: " + m + "\n"); System.out.println("Total volume: " + v + "\n"); return 1000 / score; } else { System.out.println("Evacutions exceeded allowed rate"); return 0; } } catch (Exception e) { System.err.println(e.toString() + "\n"); StackTraceElement[] ste = e.getStackTrace(); for (int i = 0; i < ste.length; i++) System.err.println(ste[i] + "\n"); return -1; } }