基本上一次过,要注意边界条件的问题:如果在recursion里有两个参数int begin, end,
递归写作recursion(num, mid+1, end), 因为+号的原因,递归中是会出现begin > end
的情况的,所以考虑初始条件的时候应该要考虑充分。 1 /** 2 * Def....
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其他好文 时间:
2014-05-26 12:12:49
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257
Given a strings1, we may represent it as a
binary tree by partitioning it to two non-empty substrings recursively.Below is
one possible representation...
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其他好文 时间:
2014-05-26 11:24:36
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214
原文地址:http://antirez.com/news/52Hello! As
promised today I did some SSD testing.The setup: a Linux box with 24 GB of RAM,
with two disks.A) A spinning ...
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其他好文 时间:
2014-05-26 10:24:56
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427
MySQL常用的存储引擎为MyISAM、InnoDB、MEMORY、MERGE,其中InnoDB提供事务安全表,其他存储引擎都是非事务安全表。MyISAM是MySQL的默认存储引擎。MyISAM不支持事务、也不支持外键,但其访问速度快,对事务完整性没有要求。InnoDB存储引擎提供了具有提交、回滚和...
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数据库 时间:
2014-05-26 09:42:53
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349
Background
Some concepts in Mathematics and Computer Science are simple in one or two dimensions but become more complex when extended to arbitrary dimensions. Consider solving differential equations...
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其他好文 时间:
2014-05-26 04:31:34
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234
Summation of primes
Problem 10
The sum of the primes below 10 is 2 + 3 + 5 + 7 = 17.
Find the sum of all the primes below two million.
还是使用Sieve of Eratosthenes 算法
我的python代码如下:
...
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其他好文 时间:
2014-05-26 03:40:15
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243
【题目】
The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack each other.
Given an integer n, return all distinct solutions to the n-queens puzzle.
Each solution contains a distinct board configuratio...
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其他好文 时间:
2014-05-24 17:12:32
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237
【题目】
Given an array of non-negative integers, you are initially positioned at the first index of the array.
Given a collection of intervals, merge all overlapping intervals.
For example,
Given [1,3],[2,6],[8,10],[15,18],
return [1,6],[8,10],[15,18].
...
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其他好文 时间:
2014-05-24 14:18:27
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193
题目描述If the difference between any two adjancent
elements in a sequence is not more than K, then we call this sequence is a
K-diff sequence. A subseque...
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其他好文 时间:
2014-05-24 09:39:27
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340