Data commit

Task/Mutual-recursion/Groovy/mutual-recursion-1.groovy

@@ -0,0 +1,3 @@
+def f, m  // recursive closures must be declared before they are defined
+f = { n -> n == 0 ? 1 : n - m(f(n-1)) }
+m = { n -> n == 0 ? 0 : n - f(m(n-1)) }

Task/Mutual-recursion/Groovy/mutual-recursion-2.groovy

@@ -0,0 +1,2 @@
+println 'f(0..20): ' + (0..20).collect { f(it) }
+println 'm(0..20): ' + (0..20).collect { m(it) }