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Search in a binary search tree
这题没难度，首先看下题目： Given the root node of a binary search tree (BST) and a value. You need to find the no...
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N-ary Tree Preorder Traversal
这题的数据结构还是上一题的，很简单，熟悉二叉树遍历的看一眼就写出来了。先看题目： Given an n-ary tree, return the preorder traversal of its n...
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Maximum Depth of N-ary Tree
先看题目 Given a n-ary tree, find its maximum depth. The maximum depth is the number of nodes along the ...
点击数：2
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Shortest Completing Word
这题没啥好说的，但是我理解题意理解了好久。。。 Find the minimum length word from a given dictionary words, which has all th...
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To lower Case
这题不多说，不会做的闭门思过。 Implement function ToLowerCase() that has a string parameter str, and returns the sa...
点击数：4
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