feat: 478_generate_random_point_in_a_circle

478_generate_random_point_in_a_circle/Cargo.lock

@@ -0,0 +1,157 @@
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478_generate_random_point_in_a_circle/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "generate_random_point_in_a_circle"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+rand = "0.9.2"

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<f64> {
+        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::<f64>()
+    }
+}