freeCodeCamp/curriculum/challenges/chinese/10-coding-interview-prep/rosetta-code/circles-of-given-radius-through-two-points.md

2.6 KiB

id, title, challengeType, videoUrl
id title challengeType videoUrl
5951815dd895584b06884620 给定半径的圆圈通过两个点 5

--description--

给定平面上的两个点和半径,通常可以通过这些点绘制给定半径的两个圆。

例外:零半径应视为从不描述圆(除非点是重合的)。如果这些点是重合的,则可以绘制无限数量的圆,其圆周上的点可以被绘制,除非半径也等于零,然后将圆圈折叠到一个点。如果点形成直径,则返回单个圆。如果这些点相距太远则无法绘制圆圈。任务:实现一个取两个点和一个半径的函数,并通过这些点返回两个圆。对于每个结果圆,提供每个圆的中心的坐标,四舍五入到四个十进制数字。将每个坐标作为数组返回,并作为数组数组进行坐标。对于边缘情况,请返回以下内容:如果点在直径上,则返回一个点。如果半径也为零,则返回"Radius Zero" 。如果点重合,则返回"Coincident point. Infinite solutions" 。如果点与直径相距更远,则返回"No intersection. Points further apart than circle diameter"更远的"No intersection. Points further apart than circle diameter" 。样本输入:
 p1 p2 r
0.1234,0.9876 0.8765,0.2345 2.0
0.0000,2.000000 0.0000,0.0000 1.0
0.1234,0.9876 0.1234,0.9876 2.0
0.1234,0.9876 0.8765,0.2345 0.5
0.1234,0.9876 0.1234,0.9876 0.0
参考:从数学论坛@Drexel的2点和半径中找到一个圆心

--hints--

getCircles是一个函数。

assert(typeof getCircles === 'function');

getCircles([0.1234, 0.9876], [0.8765, 0.2345], 2.0)应该返回[[1.8631, 1.9742], [-0.8632, -0.7521]]

assert.deepEqual(getCircles(...testCases[0]), answers[0]);

getCircles([0.0000, 2.0000], [0.0000, 0.0000], 1.0)应该返回[0, 1]

assert.deepEqual(getCircles(...testCases[1]), answers[1]);

getCircles([0.1234, 0.9876], [0.1234, 0.9876], 2.0)应返回Coincident point. Infinite solutions

assert.deepEqual(getCircles(...testCases[2]), answers[2]);

getCircles([0.1234, 0.9876], [0.8765, 0.2345], 0.5)应返回No intersection. Points further apart than circle diameter

assert.deepEqual(getCircles(...testCases[3]), answers[3]);

getCircles([0.1234, 0.9876], [0.1234, 0.9876], 0.0)应返回Radius Zero

assert.deepEqual(getCircles(...testCases[4]), answers[4]);

--solutions--