Initial data commit

Task/Ackermann-function/Hare/ackermann-function.hare

@@ -0,0 +1,20 @@
+use fmt;
+
+fn ackermann(m: u64, n: u64) u64 = {
+	if (m == 0) {
+		return n + 1;
+	};
+	if (n == 0) {
+		return ackermann(m - 1, 1);
+	};
+	return ackermann(m - 1, ackermann(m, n - 1));
+};
+
+export fn main() void = {
+	for (let m = 0u64; m < 4; m += 1) {
+		for (let n = 0u64; n < 10; n += 1) {
+			fmt::printfln("A({}, {}) = {}", m, n, ackermann(m, n))!;
+		};
+		fmt::println()!;
+	};
+};