Data update

Task/Fibonacci-sequence/Rust/fibonacci-sequence-5.rs

@@ -0,0 +1,13 @@
+fn main() {
+    for num in fibonacci_sequence() {
+        println!("{}", num);
+    }
+}
+
+fn fibonacci_sequence() -> impl Iterator<Item = u64> {
+    let sqrt_5 = 5.0f64.sqrt();
+    let p = (1.0 + sqrt_5) / 2.0;
+    let q = 1.0 / p;
+    // The range is sufficient up to 70th Fibonacci number
+    (0..1).chain((1..70).map(move |n| ((p.powi(n) + q.powi(n)) / sqrt_5 + 0.5) as u64))
+}