March 2014 update

Task/Ackermann-function/Rust/ackermann-function.rust

@@ -0,0 +1,15 @@
+ // works for Rust 0.9
+fn main() {
+	let a: int = ack(3, 4); // 125
+	println!("{}", a.to_str());
+}
+
+fn ack(m: int, n: int) -> int {
+	if m == 0 {
+		n + 1
+	} else if n == 0 {
+		ack(m - 1, 1)
+	} else {
+		ack(m - 1, ack(m, n - 1))
+	}
+}