Mutual recursion: Difference between revisions

=={{header|Wren}}==

<lang ecmascript>var M // forward declaration

var F = Fn.new { |n|

if (n == 0) return 1

return n - M.call(F.call(n-1))

}

M = Fn.new { |n|

if (n == 0) return 0

return n - F.call(M.call(n-1))

}

System.write("F(0..20): ")

(0..20).each { |i| System.write("%(F.call(i)) ") }

System.write("\nM(0..20): ")

(0..20).each { |i| System.write("%(M.call(i)) ") }

System.print()</lang>

{{out}}

<pre>

F(0..20): 1 1 2 2 3 3 4 5 5 6 6 7 8 8 9 9 10 11 11 12 13

M(0..20): 0 0 1 2 2 3 4 4 5 6 6 7 7 8 9 9 10 11 11 12 12

</pre>