原档:https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/ControlFlow.html#//apple_ref/doc/uid/TP40014097-CH9-ID120 1.For循环 (1)for in 使用for-in来遍历一个集合里的元素. ... { print("\(index) times 5 is \(index…