Scala merge array add more distinguished field : I am a new Scala programmer, i have a case that needs everyone help

				Input:
				a = Array("a", "b", "c")
				b = Array("d", "e", "f")
				c = Array("g", "h", "k")

				I want output like this:

				a+b+c=> Array({"1",array["a", "b", "c"]},
							  {"2",array["d", "e", "f"]},
							  {"3,array("g", "h", "k")]})
Regards,

Trinh