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[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 sorte...
分类:其他好文   时间:2014-07-07 16:53:17    阅读次数:196
使用Martix来实现缩放图片的功能
使用Martix(android.graphics.Matrix)类中的postScale()方法结合Bitmap来实现缩放图片的功能Bitmap bmp = BitmapFactory.decodeResource(getResource(),R.drawalbe.icon1)int bmpwid...
分类:其他好文   时间:2014-07-07 16:00:55    阅读次数:185
Leetcode Rotate Image
You are given annxn2D matrix representing an image.Rotate the image by 90 degrees (clockwise).Follow up:Could you do this in-place?矩阵的旋转如1 2 34 5 67 8...
分类:其他好文   时间:2014-07-07 15:13:49    阅读次数:181
Leetcode Spiral Matrix
Given a matrix ofmxnelements (mrows,ncolumns), return all elements of the matrix in spiral order.For example,Given the following matrix:[ [ 1, 2, 3 ],...
分类:其他好文   时间:2014-07-07 14:22:37    阅读次数:210
SWIFT学习笔记03
1、断言 let age = -3 assert(age >= 0, "A person's age cannot be less than zero") // 因为 age 2、Swift赋值符(=)不返回值,以防止把想要判断相等运算符(==)的地方写成赋值符导致的错误。数值运算符(+,-,*,/,%等)会检测并不允许值溢出。 3、在对负数b求余时,b的符号会被忽略。这意味着 a %...
分类:其他好文   时间:2014-07-02 11:46:51    阅读次数:286
POJ·2155·Matrix
MatrixTime Limit:3000MSMemory Limit:65536KDescriptionGiven an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row...
分类:其他好文   时间:2014-07-01 21:17:23    阅读次数:190
Android自带图标库
Java Usage example:myMenuItem.setIcon(android.R.drawable.ic_menu_save);Resource Usage example:android:icon="@android:drawable/ic_menu_save"alert_dark_...
分类:移动开发   时间:2014-07-01 12:18:51    阅读次数:490
怎样通过boost库的breadth_first_search算法查找点到点的最短路径
0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 1 F 0 0 1 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 S 0 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 namespace matrix {...
分类:其他好文   时间:2014-07-01 07:14:32    阅读次数:221
每日算法之三十七:Rotate Image (图像旋转)
You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Follow up: Could you do this in-place? 原地图像顺时针旋转90度。因为要求空间复杂度是常数,因此应该迭代旋转操作。 class ...
分类:其他好文   时间:2014-06-30 19:51:53    阅读次数:267
浮动数与0比较
无限大小 C语言如何表示无限大小,NAN?redis里面这么搞的:staticdoubleR_Zero,R_PosInf,R_NegInf,R_Nan;/*Doubleconstantsinitialization*/R_Zero=0.0;R_PosInf=1.0/R_Zero;R_NegInf=....
分类:其他好文   时间:2014-06-30 15:34:22    阅读次数:169
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