本文实例讲述了C#使用前序遍历、中序遍历和后序遍历打印二叉树的方法。分享给大家供大家参考。具体实现方法如下：
public class BinaryTreeNode
{
public BinaryTreeNode Left { get; set; }
public BinaryTreeNode Right { get; set; }
public int Data { get; set; }
public BinaryTreeNode(int data)
{
this.Data = data;
}
}
public enum TreeTraversal
{
PREORDER,
INORDER,
POSTORDER
}
public void PrintTree(BinaryTreeNode root, TreeTraversal treeTraversal)
{
Action<int> printValue = delegate(int v)
{
Console.Write(v + " ");
};
switch (treeTraversal)
{
case TreeTraversal.PREORDER:
PreOrderTraversal(printValue, root);
break;
case TreeTraversal.INORDER:
InOrderTraversal(printValue, root);
break;
case TreeTraversal.POSTORDER:
PostOrderTraversal(printValue, root);
break;
default: break;
}
}
public void PreOrderTraversal(Action<int> action, BinaryTreeNode root)
{
if (root == null)
return;
action(root.Data);
PreOrderTraversal(action, root.Left);
PreOrderTraversal(action, root.Right);
}
public void InOrderTraversal(Action<int> action, BinaryTreeNode root)
{
if (root == null)
return;
InOrderTraversal(action, root.Left);
action(root.Data);
InOrderTraversal(action, root.Right);
}
public void PostOrderTraversal(Action<int> action, BinaryTreeNode root)
{
if (root == null)
return;
PostOrderTraversal(action, root.Left);
PostOrderTraversal(action, root.Right);
action(root.Data);
}
希望本文所述对大家的C#程序设计有所帮助。