Ejemplo n.º 1
0
  public static ArrayList<Chunk> splitChunk(Chunk chunk_to_split, int parts) {

    int length = chunk_to_split.GetSize();

    // Limit cases
    if (length == 0) return null;

    // If I'm trying to create more parts than those that can be actually
    // created, then don't create more parts.
    if (length < parts) parts = length;

    Chunk[] split_chunks = new Chunk[parts];

    int elems_per_part = length / parts;
    int remain_elems = length % parts; // elements to append to the last part
    int index = 0;

    for (int i = 0; i < parts; i++) {

      int size_chunk = 0;

      // If this is the last chunk, then append remainder
      if (remain_elems > 0) {
        size_chunk = elems_per_part + 1;
        remain_elems--;
      } else
        // Else the size is just the number of elements
        size_chunk = elems_per_part;

      int[] new_chunk = new int[size_chunk];

      // Create the chunk elem by elem.
      for (int j = 0; j < size_chunk; j++) new_chunk[j] = chunk_to_split.GetData()[index + j];

      // Create the chunk object;
      split_chunks[i] = new Chunk(new_chunk);

      // Increment index
      index += size_chunk;
    }

    ArrayList<Chunk> chunks_list = new ArrayList<Chunk>();

    for (int i = 0; i < split_chunks.length; i++) chunks_list.add(split_chunks[i]);

    return chunks_list;
  }
Ejemplo n.º 2
0
 public static void WriteFile(String path, Chunk contents) {
   try {
     BufferedWriter out = new BufferedWriter(new FileWriter(path));
     out.write(contents.toString());
     out.close();
   } catch (IOException e) {
     System.err.println("Error: writing file " + path);
   }
 }
Ejemplo n.º 3
0
  public static Chunk MergeTwoChunks(Chunk chunk1, Chunk chunk2) {

    if ((chunk1 == null) && (chunk2 == null)) return null;
    else if (chunk1 == null) return chunk2;
    else if (chunk2 == null) return chunk1;

    // work out size of combined chunk
    int combined_length = chunk1.GetData().length + chunk2.GetData().length;

    int[] data = Arrays.copyOf(chunk1.GetData(), combined_length);
    System.arraycopy(chunk2.GetData(), 0, data, chunk1.GetData().length, chunk2.GetData().length);

    return new Chunk(data);
  }