//
//  PTree.swift
//  PractiseAlgorithm
//
//  Created by zhaoyc on 2021/3/24.
//  Copyright © 2021 List. All rights reserved.
//

import UIKit


// 树 Tree
//        1
//      /   \
//     2     3             节点2的深度(depth)为2 高度(height)为3
//    / \   /  \
//   4   5 6    7
//  /
// 8                       degree = 0 / 1 / 2  , degree为0为叶节点(leaf)


class PTree: NSObject {

}
