rust?

primes/rust/src/main.rs

@@ -0,0 +1,43 @@
+use std::time::{SystemTime};
+
+fn main() {
+    let mut times = Vec::new();
+
+    for i in 0..10 {
+        println!("Starting run {}", i);
+        let start = SystemTime::now();
+        let _ = primes(10_000_000);
+        let time = start.elapsed().unwrap().as_millis();
+        times.push(time);
+    }
+
+    let average = times.iter().sum::<u128>() / times.len() as u128;
+    println!("Took {}ms on average", average);
+}
+
+
+fn primes(max: usize) -> Vec<usize> {
+    let mut primes_list = Vec::new();
+
+    primes_list.push(2);
+
+
+    for i in 3..max { //go through all numbers
+        let mut is_prime = true;
+        for prime in &primes_list { //test each number
+            if *prime > (i as f64).sqrt() as usize {
+                break;
+            }
+            if i % prime == 0 { //i = test number, j = some known prime
+                is_prime = false;
+                break;
+            }
+        }
+
+        if is_prime {
+            primes_list.push(i);
+        }
+    }
+
+    return primes_list;
+}