Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively. Below is one possible representati ...
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其他好文 时间：
2018-10-16 10:16:48
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174
Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path betwe ...
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2018-10-11 13:41:53
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156
Given the root node of a binary search tree (BST) and a value. You need to find the node in the BST that the node's value equals the given value. Retu ...
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编程语言 时间：
2018-10-06 22:08:54
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226
Codeforces 1060 b You are given a positive integer nn. Let S(x)S(x) be sum of digits in base 10 representation of xx, for example, S(123)=1+2+3=6S(123 ...
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2018-10-06 11:52:23
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172
Given a non-empty array of digits representing a non-negative integer, plus one to the integer. The digits are stored such that the most significant d ...
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编程语言 时间：
2018-10-05 17:19:58
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157
Given a string containing digits from 2-9 inclusive, return all possible letter combinations that the number could represent. A mapping of digit to le ...
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2018-10-04 10:00:48
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133
The Unique MST http://poj.org/problem?id=1679 Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 36744 Accepted: 13395 Description Given a con ...
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其他好文 时间：
2018-10-04 09:26:31
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160
今天博主立下一个flag，必须要开始好好解决DP问题！！LC现在DP系列有117题，现在从易到难的顺序重走这117之路。 今天坐在Victoria coffee 里面从第一个最简单的paint house问题解决开始。 ps：这里都是博主自己做题时的思考过程，不是大神讲解，欢迎指正缺陷和错误。 Pa ...
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其他好文 时间：
2018-09-30 14:56:14
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153
Write a program that outputs the string representation of numbers from 1 to n. But for multiples of three it should output “Fizz” instead of the numbe ...
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其他好文 时间：
2018-09-30 13:02:36
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170
We have two special characters. The first character can be represented by one bit 0. The second character can be represented by two bits (10 or 11). N ...
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编程语言 时间：
2018-09-29 23:58:12
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339
