June 2018 Update

Task/Factorial/Nim/factorial-1.nim

@@ -1,3 +1,2 @@
-proc factorial(x): int =
-  if x > 0: x * factorial(x - 1)
-  else: 1
+import math
+let i:int = fac(x)

Task/Factorial/Nim/factorial-2.nim

@@ -1,4 +1,3 @@
 proc factorial(x): int =
-  result = 1
-  for i in 1..x+1:
-    result *= i
+  if x > 0: x * factorial(x - 1)
+  else: 1

Task/Factorial/Nim/factorial-3.nim

@@ -0,0 +1,4 @@
+proc factorial(x: int): int =
+  result = 1
+  for i in 2..x:
+    result *= i