NumPy矩阵的旋转在⽤Python的数字图像处理、CNN或者深度学习⾥，对图像的处理：形变(缩放)处理常将图像数据读取到NumPy的array数据⾥，然后对图像数据进⾏形变处理。NumPy提供了很多的对array数组的操作：tile、rot90等。本章除了了解rot90的基本使⽤外，⾃⼰也想写点程序实现旋转的功能。1
原题传送门 1. 题目描述 2. Solution 1、思路分析 1> Rotation of point through 90° about the origin in clockwise direction when point M (x, y) is rotated about the origin O through 90° in clockwise direction. The new position of point M (x, y) will become M’
https://vjudge.net/contest/389195#problem/C It is preferrable to read the pdf statment.After some basic geometric lessons, Cuber QQ has learned that one can draw one and only one circle across three given distinct points, on a 2D plane. Specialized in art
题目描述 There are n students standing in a circle in some order. The index of the i-th student is pi. It is guaranteed that all indices of students are distinct integers from 1 to n (i. e. they form a permutation). Students want to start a round danc
这是一道很好的练习链表的题目 先给出我写的代码 #include<cstdio> using namespace std; const int maxn = 20+3; struct person { int index; person *clockwise; person *con_clockwise; }Node[maxn]; person *off, *off_con;//删除了第一个节点怎么办 int N,k,m;
