Initial data commit

Task/Multifactorial/Julia/multifactorial.julia

@@ -0,0 +1,16 @@
+using Printf
+
+function multifact(n::Integer, k::Integer)
+    n > 0 && k > 0 || throw(DomainError())
+    k > 1 || factorial(n)
+    return prod(n:-k:2)
+end
+
+const khi = 5
+const nhi = 10
+println("Showing multifactorial for n in [1, $nhi] and k in [1, $khi].")
+for k = 1:khi
+    a = multifact.(1:nhi, k)
+    lab = "n" * "!" ^ k
+    @printf("  %-6s →  %s\n", lab, a)
+end