June 2018 Update

Task/Factorial/Julia/factorial-1.julia

@@ -1,9 +1,12 @@
-julia> help(factorial)
-Loading help data...
-Base.factorial(n)
+function fact(n::Integer)
+    n < 0 && return zero(n)
+    f = one(n)
+    for i in 2:n
+        f *= i
+    end
+    return f
+end
 
-   Factorial of n
-
-Base.factorial(n, k)
-
-   Compute "factorial(n)/factorial(k)"
+for i in 10:20
+	println("$i -> ", fact(i))
+end

Task/Factorial/Julia/factorial-2.julia

@@ -1,10 +1,2 @@
-function factorial(n::Integer)
-    if n < 0
-        return zero(n)
-    end
-    f = one(n)
-    for i = 2:n
-        f *= i
-    end
-    return f
-end
+fact2(n::Integer) = prod(Base.OneTo(n))
+@show fact2(20)