日本综合一区二区|亚洲中文天堂综合|日韩欧美自拍一区|男女精品天堂一区|欧美自拍第6页亚洲成人精品一区|亚洲黄色天堂一区二区成人|超碰91偷拍第一页|日韩av夜夜嗨中文字幕|久久蜜综合视频官网|精美人妻一区二区三区

二叉樹算法python實(shí)現(xiàn)：
1.添加節(jié)點(diǎn)
2.廣度優(yōu)先遍歷
3.深度優(yōu)先遍歷：先序遍歷，中序遍歷，后序遍歷

嘉峪關(guān)網(wǎng)站建設(shè)公司創(chuàng)新互聯(lián),嘉峪關(guān)網(wǎng)站設(shè)計(jì)制作，有大型網(wǎng)站制作公司豐富經(jīng)驗(yàn)。已為嘉峪關(guān)上1000家提供企業(yè)網(wǎng)站建設(shè)服務(wù)。企業(yè)網(wǎng)站搭建\外貿(mào)營銷網(wǎng)站建設(shè)要多少錢，請找那個售后服務(wù)好的嘉峪關(guān)做網(wǎng)站的公司定做！

# -*- codding:utf-8 -*-
class Node(object):
    """節(jié)點(diǎn)"""
    def  __init__(self,item):
        self.elem = item
        self.lchild = None
        self.rchild = None

class Tree(object):
    """二叉樹"""
    def __init__(self):
        self.root = None

    def add(self,item):
        node =Node(item)

        if self.root is None:
            self.root = node
            return
        queue = [self.root]

        while queue:
            cur_node =  queue.pop(0)
            if cur_node.lchild is None:
                cur_node.lchild = node
                return
            else :
                queue.append(cur_node.lchild)
            if cur_node.rchild is None:
                cur_node.rchild = node
                return
            else :
                queue.append(cur_node.rchild)

    def bread_travel(self):
        """廣度遍歷"""
        if self.root is None:
            return
        queue = [self.root]

        while queue:
            cur_node = queue.pop(0)
            print(cur_node.elem,end= " ")
            if cur_node.lchild is not None:
                queue.append(cur_node.lchild)
            if cur_node.rchild is not None:
                queue.append(cur_node.rchild)

    def pre_travel(self,node):
        """前序遍歷"""
        if node is None:
            return
        print(node.elem,end = " ")
        self.pre_travel(node.lchild)
        self.pre_travel(node.rchild)

    def mid_travel(self,node):
        """中序遍歷"""
        if node is None:
            return
        self.mid_travel(node.lchild)
        print(node.elem,end = " ")
        self.mid_travel(node.rchild)

    def post_travel(self,node):
        """后序遍歷"""
        if node is None:
            return
        self.post_travel(node.lchild)
        self.post_travel(node.rchild)
        print(node.elem, end=" ")

if __name__ == "__main__":
    tree = Tree()
    tree.add(0)
    tree.add(1)
    tree.add(2)
    tree.add(3)
    tree.add(4)
    tree.add(5)
    tree.add(6)
    tree.add(7)
    tree.add(8)
    tree.add(9)
    tree.bread_travel()
    print(" ")
    tree.pre_travel(tree.root)
    print(" ")
    tree.mid_travel(tree.root)
    print(" ")
    tree.post_travel(tree.root)

# 0 1 2 3 4 5 6 7 8 9    層次遍歷
# 0 1 3 7 8 4 9 2 5 6    前序遍歷
# 7 3 8 1 9 4 0 5 2 6    中序遍歷
# 7 8 3 9 4 1 5 6 2 0    后序遍歷

網(wǎng)頁名稱：Python實(shí)現(xiàn)二叉樹
網(wǎng)頁網(wǎng)址：http://www.dlmjj.cn/article/gopcoi.html