码迷,mamicode.com
首页 >  
搜索关键字:spiral matrix    ( 4337个结果
Leetcode-Search a 2D Matrix
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties:Integers in each row are sorted fr...
分类:其他好文   时间:2014-11-17 00:17:02    阅读次数:215
Convert character array to string in MATLAB
Matlab提取特征值是经常要读取多个图片文件,把文件名保存在数组中后再读取会出错。从stackoverflow中找到如下解决方法:I've a M by N matrix, each cell contains a character array, that is an image path. H...
分类:其他好文   时间:2014-11-16 20:03:43    阅读次数:153
自定义ImageVIew 支持手势 拖动、缩放、旋转
import android.content.Context; import android.graphics.Matrix; import android.graphics.PointF; import android.util.AttributeSet; import android.util....
分类:其他好文   时间:2014-11-16 17:14:09    阅读次数:213
OpenCV Tutorials —— Mask operations on matrices
Mask operations on matrices are quite simple. The idea is that we recalculate each pixels value in an image according to a mask matrix (also known as ...
分类:其他好文   时间:2014-11-16 17:07:47    阅读次数:212
[Bhatia.Matrix Analysis.Solutions to Exercises and Problems]ExI.1.1
Given any $k$-tupel of linearly independent vectors $X$ as above, there exists a $k$-tuple $Y$ biorthognal to it. If $k=n$, this $Y$ is unique. \eex$$...
分类:其他好文   时间:2014-11-16 12:02:08    阅读次数:151
[Bhatia.Matrix Analysis.Solutions to Exercises and Problems]Contents
[Bhatia.Matrix Analysis.Solutions to Exercises and Problems]ExI.1.3Use the QR decomposition to prove Hadamard's inequality: if $X=(x_1,\cdots,x_n)$, t...
分类:其他好文   时间:2014-11-16 11:58:53    阅读次数:153
[Bhatia.Matrix Analysis.Solutions to Exercises and Problems]ExI.1.3
Use the QR decomposition to prove Hadamard's inequality: if $X=(x_1,\cdots,x_n)$, then $$\bex |\det X|\leq \prod_{j=1}^n \sen{x_j}. \eex$$ Equality ho...
分类:其他好文   时间:2014-11-16 11:54:28    阅读次数:107
[Bhatia.Matrix Analysis.Solutions to Exercises and Problems]ExI.1.2
Let $X$ be nay basis of $\scrH$ and let $Y$ be the basis biorthogonal to it. Using matrix multiplication, $X$ gives a linear transformation from $\bbC...
分类:其他好文   时间:2014-11-16 11:53:20    阅读次数:169
Search a 2D Matrix
你能用最快的速度找到矩阵中是否有我们想要的值吗。例如:1 2 34 5 67 8 9target = 9,return true,target=10,return false。ps:矩阵升序(左到右,上到下),但不一定是连续数字。解法:两次二分。1. 一次二分找到给定的target可能在第几行2. ...
分类:其他好文   时间:2014-11-15 18:29:01    阅读次数:175
[Leetcode] Search a 2D Matrix
Write an efficient algorithm that searches for a value in anmxnmatrix. This matrix has the following properties:Integers in each row are sorted from l...
分类:其他好文   时间:2014-11-15 18:23:59    阅读次数:165
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!