二叉树结点

定义二叉树结点类：

/**
 * 链式二叉树结点
 * @author Administrator
 *
 */
public class Node {
  int value;
  Node leftChild;
  Node rightChild;
 
  public Node(int value) {
    this.value = value;
  }
 
  public Node(int value, Node leftChild, Node rightChild) {
    super();
    this.value = value;
    this.leftChild = leftChild;
    this.rightChild = rightChild;
  }
}