Data update

Task/Mutual-recursion/Zig/mutual-recursion.zig

@@ -0,0 +1,15 @@
+fn f(n: u64) u64 {
+    return if (n == 0) 1 else n-m(f(n-1));
+}
+
+fn m(n: u64) u64 {
+    return if (n == 0) 0 else n-f(m(n-1));
+}
+
+pub fn main() !void {
+    const stdout = @import("std").io.getStdOut().writer();
+    try stdout.writeAll(" n   F  M\n");
+    for (0..20) |n| {
+        try stdout.print("{d: >2}: {d: >2} {d: >2}\n", .{n, f(n), m(n)});
+    }
+}