In OpenCv, it only provide the function fitEllipse to fit Ellipse, but doesn't provide function to fit circle, so i read some paper, and write a function to do it. The paper it refer to is "A Few Methods for Fitting Circles to Data". Also when t…

The chi squared distance d(x,y) is, as you already know, a distance between two histograms x=[x_1,..,x_n] and y=[y_1,...,y_n] having n bins both. Moreover, both histograms are normalized, i.e. their entries sum up to one.The distance measure d is usu…

Description Square Ice is a two-dimensional arrangement of water molecules H2O, with oxygen at the vertices of a square lattice and one hydrogen atom between each pair of adjacent oxygen atoms. The hydrogen atoms must stick out on the left and right…

A. Theatre Square time limit per test 2 seconds memory limit per test 64 megabytes input standard input output standard output Theatre Square in the capital city of Berland has a rectangular shape with the size n × m meters. On the occasion of the ci…

http://codeforces.com/problemset/problem/1/A Theatre Square time limit per test 2 seconds memory limit per test 64 megabytes input standard input output standard output Theatre Square in the capital city of Berland has a rectangular shape with the si…

Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area. For example, given the following matrix: Return 4. 思路: DP,到达当前(非0)结点的最长边长square[i][j] = min(square[i-1][j-1], min(square[i-1][j], square…

实现Square类,让其继承自Rectangle类,并在Square类增添新属性和方法,在2的基础上,在Square类中重写Rectangle类中的初始化和打印方法 #import <Foundation/Foundation.h> @interface Rectangle : NSObject{ int width; int height; } @property int width,height; -(int) area; -(int) perimeter; -(void)setWidth…

Theatre Square time limit per test 2 seconds memory limit per test 64 megabytes input standard input output standard output Theatre Square in the capital city of Berland has a rectangular shape with the size n × m meters. On the occasion of the city'…

Square Ice Description Square Ice is a two-dimensional arrangement of water molecules H2O, with oxygen at the vertices of a square lattice and one hydrogen atom between each pair of adjacent oxygen atoms. The hydrogen atoms must stick out on the left…

The square chest Sophia pressed the button in front of her, slamming her fist against it. The door rumbled and appeared to do nothing. “Oh man, that’s not very interesting at all.” Sofia complained. Suddenly, the the door hissed and a jet of ice cold…