Here is the interview question prompt, presented for reference.
You are given an array of
points where each point represents a point on the
X-Y plane points[i] = [xi, yi]. You are also given an integer
n. Find the
n closest points to the origin
Your answer should be in descending order of distance (largest to smallest). The answer is guaranteed to be unique (except for the order it is in).
The distance between two points on the
X-Yplane is the Euclidean distance. It is calculated using the formula, √(x1 - x2)2 + (y1 - y2)2.
For example, consider two points
[1, 1] and
[1, 2], and
n = 1. The distance between
[1, 1] and the origin is
1.42), and the distance between
[1, 2] and the origin is
sqrt(5) (approximately 2.24).
sqrt(2) is the smaller of two numbers, so the point
[1, 1] is closer to the origin, which makes it the answer.
You can see the full challenge with visuals at this link.
Challenges • Asked 10 months ago by Jake from AlgoDaily