题目描述 The lowest common ancestor (LCA) of two nodes U and V in a tree is the deepest node that has both U and V as descendants.Given any two nodes in a ...
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其他好文 时间：
2019-02-16 15:39:54
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191
21. Merge Two Sorted Lists Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of th ...
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Web程序 时间：
2019-02-16 13:28:29
阅读次数：
211
24. Swap Nodes in Pairs Given a linked list, swap every two adjacent nodes and return its head. You may not modify the values in the list's nodes, onl ...
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Web程序 时间：
2019-02-16 13:20:04
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157
算法描述： Two elements of a binary search tree (BST) are swapped by mistake. Recover the tree without changing its structure. Example 1: Example 2: Follow ...
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其他好文 时间：
2019-02-15 19:52:15
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183
Suppose a bank has N windows open for service. There is a yellow line in front of the windows which devides the waiting area into two parts. The rules ...
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其他好文 时间：
2019-02-15 17:25:00
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196
P3143 [USACO16OPEN]钻石收藏家Diamond Collector 题意要注意一点：有两个陈列架！ 如果只有一个陈列架，是很容易的。two pointers直接从左到右跑一下即可。 如果有两个陈列架，就需要进行答案合并了。做法是这样的： 设两个数组： 1. $pre$数组，$pre[ ...
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其他好文 时间：
2019-02-15 01:27:58
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245
"152. Combinations" / "77. Combinations" 本题难度: Medium Topic: Search & Recursion Description Given two integers n and k, return all possible combinatio ...
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其他好文 时间：
2019-02-15 01:11:29
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181
Given two binary trees, write a function to check if they are the same or not. Two binary trees are considered the same if they are structurally ident ...
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其他好文 时间：
2019-02-14 22:19:34
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204
Given two binary trees and imagine that when you put one of them to cover the other, some nodes of the two trees are overlapped while the others are n ...
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其他好文 时间：
2019-02-14 15:05:23
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168
The well known Fibonacci sequence is obtained by starting with 0 and 1 and then adding the two last numbers to get the next one. For example the third ...
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其他好文 时间：
2019-02-14 00:20:19
阅读次数：
131
