学过线性代数我们都知道,对于矩阵,很容易理解,它就是一个数表!但是对于行列式,就是一个数!我们自然会问,这个数到底是个神马玩意呢?为什么它就这么定义计算式呢?
线性代数中,我们知道给定的$n$阶方阵$A=(a_{ij})_{n\times n}$,其行列式的计算公式就定义为\[\det A=\...
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其他好文 时间:
2014-05-27 02:32:18
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317
Find number which appears more than half times
of array length.
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移动开发 时间:
2014-05-27 00:16:48
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339
Given an array of integers, every element appears
three times except for one. Find that single one. Note: Your algorithm should
have a linear runtime ...
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其他好文 时间:
2014-05-27 00:10:26
阅读次数:
319
$\bf命题:$设$A$为$s \times n$阶矩阵,${\eta _1},{\eta
_2}, \cdots ,{\eta _r}$为齐次线性方程组$AX=0$的一个基础解系,记$B = \left( {{\eta _1},{\eta _2},
\cdots ,{\eta _r}} \righ...
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其他好文 时间:
2014-05-26 09:37:07
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145
N皇后问题Time Limit : 2000/1000ms (Java/Other)Memory
Limit : 32768/32768K (Java/Other)Total Submission(s) : 39Accepted Submission(s)
: 14Font:Times New Ro...
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其他好文 时间:
2014-05-25 23:19:44
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216
畅通工程Time Limit : 4000/2000ms (Java/Other)Memory
Limit : 65536/32768K (Java/Other)Total Submission(s) : 31Accepted Submission(s)
: 13Font:Times New Rom...
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其他好文 时间:
2014-05-25 19:47:19
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258
【题目】
Given a set of candidate numbers (C) and a target number (T), find all unique combinations in C where the candidate numbers sums to T.
The same repeated number may be chosen from C unlimited number of times.
Note:
All numbers (including target) w...
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其他好文 时间:
2014-05-21 15:21:28
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292
题目:
Given an array of integers, every element appears
three times except for one. Find that single one.
Note:
Your algorithm should have a linear runtime complexity. Could you implem...
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其他好文 时间:
2014-05-20 16:22:52
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241
SGMSettingConfig.h#import @interface
SGMSettingConfig : NSObject{ NSInteger HTTP_PACKAGE_SIZE; NSInteger
HTTP_RETRY_TIMES; NSInteger REPLY_LENGTH; ...
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其他好文 时间:
2014-05-16 03:36:59
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373
Single Number II
Total Accepted: 14472 Total
Submissions: 44420My Submissions
Given an array of integers, every element appears three times except for one. Find that single one.
Note:
Y...
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其他好文 时间:
2014-05-15 01:23:42
阅读次数:
273