You may only use constant extra space. You may assume that it is a perfect binary tree (ie, all leaves are at the same level, and every parent has two children). For example, Given the following perfect binary tree, 1 / \ 2 3 / \ / \ 4 5 6 7 After calling your function, the...
AC代码(Python) 1#Definition for a binary tree node.2#class TreeNode(object):3#def __init__(self, x):4#self.val = x5#self.left = None6#self.right = None78classSolution(object):9defisSameTree(self, p, q):10"""11:type p: TreeNode12:type q: TreeNode13:rtype: bool14"""15d...
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left(NULL), right(NULL) {}9* };10*/11classSolution {12public:13intsumNumbers(TreeNode *root) {14//IMPORTANT: Please reset any member data you declared, as15//the same Solution instance will be reused for