Data update

Task/Sudan-function/Rust/sudan-function.rs

@@ -0,0 +1,15 @@
+fn sudan1(n: usize, x: usize, y: usize) -> usize {
+    match (n, y) {
+        (0, _) => x + y,
+        (_, 0) => x,
+        _ => sudan1(n - 1, sudan1(n, x, y - 1), sudan1(n, x, y - 1) + y)
+    }
+}
+
+fn sudan2(n: usize, x: usize, y: usize) -> usize {
+    if n == 0 { x + y }
+    else if y == 0 { x }
+    else {
+        sudan2(n - 1, sudan2(n, x, y - 1), sudan2(n, x, y - 1) + y)
+    }
+}