Swift,数组

1、创建(Array)数组(数组内的类型一定要相同,有序的可重复)

(1)创建默认值的数组

let array:[Int]
array=[Int](repeatElement(3,count:5))  //[3,3,3,3,3]

(2)创建有序范围Int的数组

let array=Array(0..<5)    //[0,1,2,3,4]
let array=Array(1...5)  //[1,2,3,4,5]

(3)字面量创建数组(最常用)

let array=[1,2,3,4,5]  //[1,2,3,4,5]

(4)空数组

var array=Array<Int>()  //[]

2、查看数组的长度(count)和判断数组是否为空(isEmpty)

let array=[1,2,3,4,5]
print(array.count)  //5
array.isEmpty  //false

3、数组(append)最后插入

let array=["a","b"]
array.append("c")  //["a","b","c"]

4、数组(insert)中间插入

let array=["a","b"]
array.insert("c",at:1)  //["a","c","b"]

5、根据数组索引(remove)删除

let array=["a","b"]
array.remove(at:1)  //["b"]

 

posted @ 2017-09-12 16:14  kimingw  阅读(256)  评论(0编辑  收藏  举报