TreeNodeUtil.java

import java.util.Arrays;

public class TreeNodeUtil {

  public static TreeNode getTreeNode() {
    TreeNode root = new TreeNode();
    root.edges.addAll(Arrays.asList(
        new TreeNode.Edge(7),
        new TreeNode.Edge(14),
        new TreeNode.Edge(3)
    ));
    root.edges.get(0).root.edges.addAll(Arrays.asList(
        new TreeNode.Edge(4),
        new TreeNode.Edge(3)
    ));
    root.edges.get(0).root.edges.get(0).root.edges.add(new TreeNode.Edge(6));
    root.edges.get(2).root = new TreeNode();
    root.edges.get(2).root.edges.addAll(Arrays.asList(
        new TreeNode.Edge(2),
        new TreeNode.Edge(1)
    ));
    root.edges.get(2).root.edges.get(1).root.edges.addAll(Arrays.asList(
        new TreeNode.Edge(6),
        new TreeNode.Edge(4)
    ));
    root.edges.get(2).root.edges.get(1).root.edges.get(1).root.edges.addAll(Arrays.asList(
        new TreeNode.Edge(4),
        new TreeNode.Edge(2)
    ));
    root.edges.get(2).root.edges.get(1).root.edges.get(1).root.edges.get(1).root.edges
        .addAll(Arrays.asList(
            new TreeNode.Edge(1),
            new TreeNode.Edge(2),
            new TreeNode.Edge(3)
        ));
    return root;
  }
}