var someDict:[Int:String] = [1:"One", 2:"Two", 3:"Three"] let dictKeys = [Int](someDict.keys) let dictValues = [String](someDict.values) print("输出字典的键(key)") for (key) in dictKeys { print("\(key)") } print("输出字典的值(value)") for (value) in dictValues { print("\(value)") }