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class Solution: def majorityElement(self, nums: List[int]) -> int: # 摩尔计数法，1、互相抵消 2、计数阶段，不等于0则是重复最多的那个 count = 0 # 票数 res = None for n in nums: if cou 阅读全文
摘要：
# Definition for a binary tree node. # class TreeNode(object): # def __init__(self, x): # self.val = x # self.left = None # self.right = None class Co 阅读全文
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class Solution: def numIslands(self, grid: List[List[str]]) -> int: def one_to_zero(i, j): while i < row and j < col and i >= 0 and j >= 0 and grid[i] 阅读全文
摘要：
# Definition for a binary tree node. # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None class Solution: 阅读全文
摘要：
# Definition for a binary tree node. # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None class Solution: 阅读全文
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# Definition for a binary tree node. # class TreeNode: # def __init__(self, val=0, left=None, right=None): # self.val = val # self.left = left # self. 阅读全文
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# Definition for a binary tree node. # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None class Solution: 阅读全文
摘要：
# Definition for a binary tree node. # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None class Solution: 阅读全文
摘要：
# Definition for a binary tree node. # class TreeNode: # def __init__(self, x): # self.val = x # self.left = None # self.right = None class Solution: 阅读全文