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题解 | #用两个栈实现队列#

# -*- coding:utf-8 -*- class Solution: def __init__(self): self.stack1 = [] self.stack2 = [] def push(self, node): # w...

Python3 剑指

2021-10-30

0 332

题解 | #平衡二叉树#

# -*- coding:utf-8 -*- # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None cl...

Python3 剑指

2021-10-30

0 345

题解 | #二叉树的镜像#

# class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None # # 代码中的类名、方法名、参数名已经指定，请勿...

Python3 剑指

2021-10-30

0 409

题解 | #二叉搜索树的第k个结点#

# -*- coding:utf-8 -*- # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None cl...

Python3 剑指

2021-10-30

0 351

题解 | #按之字形顺序打印二叉树#

# -*- coding:utf-8 -*- # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None cl...

Python3 剑指

2021-10-30

1 478

题解 | #二叉树的深度#

# -*- coding:utf-8 -*- # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None cl...

Python3 剑指

2021-10-30

0 311

题解 | #树的子结构#

# -*- coding:utf-8 -*- # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None cl...

Python3 剑指

2021-10-13

0 470

题解 | #重建二叉树#

# class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None # # 代码中的类名、方法名、参数名已经指定，请勿...

Python3 剑指

2021-10-13

1 532

题解 | #链表中环的入口结点#

# -*- coding:utf-8 -*- # class ListNode: # def __init__(self, x): # self.val = x # self.next = None class Solution: def EntryN...

Python3 剑指

2021-10-13

1 371

题解 | #删除链表中重复的结点#

# -*- coding:utf-8 -*- # class ListNode: # def __init__(self, x): # self.val = x # self.next = None class Solution: def delete...

Python3 剑指

2021-10-13

0 412