Initial data commit

Task/Factorial/Sidef/factorial-1.sidef

@@ -0,0 +1,3 @@
+func factorial_recursive(n) {
+    n == 0 ? 1 : (n * __FUNC__(n-1))
+}

Task/Factorial/Sidef/factorial-2.sidef

@@ -0,0 +1,3 @@
+func factorial_reduce(n) {
+    1..n -> reduce({|a,b| a * b }, 1)
+}

Task/Factorial/Sidef/factorial-3.sidef

@@ -0,0 +1,5 @@
+func factorial_iterative(n) {
+    var f = 1
+    {|i| f *= i } << 2..n
+    return f
+}

Task/Factorial/Sidef/factorial-4.sidef

@@ -0,0 +1 @@
+say 5!