Example #1
0
 private static <T> void writeTreeBranch(
     Tree<T> tree, Writer writer, List<Boolean> lines, boolean lastBranch) throws IOException {
   for (boolean line : lines) {
     if (line) {
       writer.write("  |  ");
     } else {
       writer.write("     ");
     }
   }
   if (lastBranch) {
     writer.write("  '-- ");
   } else {
     writer.write("  |-- ");
   }
   writer.write(String.valueOf(tree.getNodeData()));
   writer.write("\n");
   Iterator<Tree<T>> branchIt = tree.iterator();
   while (branchIt.hasNext()) {
     Tree<T> branch = branchIt.next();
     List<Boolean> newLines = new ArrayList<Boolean>();
     newLines.addAll(lines);
     newLines.add(!lastBranch);
     writeTreeBranch(branch, writer, newLines, !branchIt.hasNext());
   }
 }
Example #2
0
  private static <T> List<List<T>> getAllPaths(Tree<T> tree, List<T> startingWith) {
    List<List<T>> result = new ArrayList<List<T>>();

    List<T> newStartingWith = new ArrayList<T>();
    newStartingWith.addAll(startingWith);
    newStartingWith.add(tree.getNodeData());

    Iterator<Tree<T>> it = tree.iterator();
    if (it.hasNext()) {
      while (it.hasNext()) {
        Tree<T> branch = it.next();
        result.addAll(getAllPaths(branch, newStartingWith));
      }
    } else {
      result.add(newStartingWith);
    }

    return result;
  }