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+++ b/478_generate_random_point_in_a_circle/src/lib.rs @@ -0,0 +1,35 @@ +pub struct Solution { + radius: f64, + x_center: f64, + y_center: f64, +} + +impl Solution { + pub fn new(radius: f64, x_center: f64, y_center: f64) -> Self { + Self { + radius, + x_center, + y_center, + } + } + + pub fn rand_point(&self) -> Vec { + let mut x_rnd; + let mut y_rnd; + + loop { + x_rnd = Solution::rand() * 2.0 - 1.0; + y_rnd = Solution::rand() * 2.0 - 1.0; + + if x_rnd * x_rnd + y_rnd * y_rnd <= 1.0 { + break; + } + } + + vec![x_rnd * self.radius + self.x_center, y_rnd * self.radius + self.y_center] + } + + fn rand() -> f64 { + rand::random::() + } +}