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GitHub
1 年
面试题 54. 二叉搜索树的第 k 大节点
给定一棵二叉搜索树,请找出其中第 k 大的节点的值。 由于二叉搜索树的中序遍历是升序的,因此可以反序中序遍历,即先 ...
GitHub
1 年
面试题 32 - III. 从上到下打印二叉树 III
请实现一个函数按照之字形顺序打印二叉树,即第一行按照从左到右的顺序打印,第二层按照从右到左的顺序打印,第三行再按照从左到右的顺序打印,其他行以此类推。 为了实现锯齿形层序遍历,我们每次将当前层的节点添加到结果数组之前,先判断一下当前 ...
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