Stabla/Primeri za test/StabloIORandom.java

   1 import java.math.BigInteger;
   2 import java.util.Random;
   3 import java.util.concurrent.atomic.AtomicInteger;
   4
   5 import org.svetovid.io.SvetovidReader;
   6 import org.svetovid.io.SvetovidWriter;
   7
   8 public class StabloIORandom implements StabloIO {
   9
  10     protected long seed;
  11     protected int length;
  12     protected int depth;
  13
  14     public StabloIORandom() {
  15         this(System.currentTimeMillis());
  16     }
  17
  18     public StabloIORandom(long seed) {
  19         this(seed, 5, 10);
  20     }
  21
  22     public StabloIORandom(long seed, int length, int depth) {
  23         this.seed = seed;
  24         this.length = length;
  25         this.depth = depth;
  26     }
  27
  28     public long getSeed() {
  29         return seed;
  30     }
  31
  32     public void setSeed(long seed) {
  33         this.seed = seed;
  34     }
  35
  36     public int getLength() {
  37         return length;
  38     }
  39
  40     public void setLength(int length) {
  41         this.length = length;
  42     }
  43
  44     public int getDepth() {
  45         return depth;
  46     }
  47
  48     public void setDepth(int depth) {
  49         this.depth = depth;
  50     }
  51
  52     @Override
  53     public Stablo readStablo(SvetovidReader in) {
  54         Random random = new Random(seed);
  55         AtomicInteger sequence = new AtomicInteger();
  56         Stablo stablo = readStablo(random, sequence, length, depth);
  57         return stablo;
  58     }
  59
  60     private Stablo readStablo(Random random, AtomicInteger sequence, int length, int depth) {
  61         if (depth <= 0) {
  62                 return null;
  63         }
  64         int id = sequence.addAndGet(1 + random.nextInt(9));
  65         String vrednost = new BigInteger(length, random).toString(36);
  66         Stablo desni = readStablo(random, sequence, length + random.nextInt(5), depth - random.nextInt(5));
  67         Stablo levi = readStablo(random, sequence, length + random.nextInt(5), depth - random.nextInt(5));
  68         return new Stablo(id, vrednost, levi, desni);
  69     }
  70
  71     @Override
  72     public void printStablo(SvetovidWriter out, Stablo stablo) {
  73         throw new UnsupportedOperationException();
  74     }
  75 }