//数组声明

var arr0 = Array<Int>()

var arr1 = Array<String>(count: 3, repeatedValue: "")

var strs = ["Hello"]

print(strs.count) //个数

strs.append("Hi") //添加

print(strs.isEmpty) //判空

strs.appendContentsOf(["How", "Are", "Your"]) //添加数组

strs.insert("Bob", atIndex: 0) //插入

strs.removeLast()

print(strs)

strs.removeFirst(2) //移除前几个

print(strs)

strs.removeRange(strs.endIndex.advancedBy(-2) ..< strs.endIndex) //移除最后2个

print(strs)

strs.removeAll(keepCapacity: true) //移除所有但保留存储空间

strs += ["a","b"] //数组合并

strs.description

strs.debugDescription

strs[0] = "WWW" //替换

strs.reserveCapacity(2)

print(strs)