Data Update

Task/Modified-random-distribution/Rust/modified-random-distribution.rust

@@ -0,0 +1,29 @@
+use ndhistogram::{Histogram, ndhistogram, axis::Uniform};
+use rand::Rng;
+
+/// change x in [0.0, 1.0) to a split with minimum probability at 0.5
+fn modifier(x: f64) -> f64 {
+    if x < 0.5 {
+        return 2.0 * (0.5 - &x);
+    } else {
+        return 2.0 * (&x - 0.5);
+    }
+}
+
+const WANTED: usize = 20_000;
+
+fn main() {
+    let mut hist = ndhistogram!(Uniform::new(19, -0.0, 1.0));
+    let mut rng = rand::thread_rng();
+    for _ in 0.. WANTED {
+        loop {
+            let x: f64 = rng.gen::<f64>();
+            let y: f64 = rng.gen::<f64>();
+            if y < modifier(x) {
+                hist.fill(&f64::from(x));
+                break;
+            }
+        }
+    }
+    println!("{}", hist);
+}