Swift- 数组
//: Playground - noun: a place where people can play
import UIKit
var str = "Hello, playground"
//容器类
////1.数组 Array
//
////一般形式
//var numbers:[Int] = [0,1,2,3,4,5]
//var vowels:[String] = ["A","E","I","O","U"]
//
////泛型形式
//var numbers1:Array<Int> = [0,1,2,3,4,5]
//var vowels1:Array<String> = ["A","E","I","O","U"]
//
////初始化空数组
//var emptyArray1:[Int] = []
//var emptyArray2:Array<Int> = []
//var emptyArray3 = [Int]()
//var emptyArray4 = Array<Int>()
//
////定义固定大小的数组并初始化为0
//var allZeros = [Int](repeating: 0, count: 5)
//var allZeros2 = Array<Int>(repeating: 1, count: 5)
////数组的一些属性
//var numbers = [1,2,3,4,5]
//var vowels = ["A","E","I","O","U"]
//var emptyArray = [Int]()
//
//numbers.isEmpty
//emptyArray.isEmpty
//
////数组索引
//vowels[2]
//vowels.count
//vowels.first
//vowels.last
//emptyArray.first
//emptyArray.last
//
//if let firstVowel = vowels.first {
// print("The first vowel is" + firstVowel)
//}
//
//vowels.first!
//vowels[vowels.count - 1]
//
//numbers.min()
//numbers.max()
//
//numbers[2..<4]
//numbers[2..<numbers.count]
//vowels.contains("A")
//
//vowels.index(of: "E")
//vowels.index(of: "F")
//
////数组遍历
//for number in numbers {
// print(number)
//}
//
//for (i, vowel) in vowels.enumerated() {
// print("\(i + 1): \(vowel)")
//}
//
//var oneToFive = [1,2,3,4,5]
//numbers == oneToFive//数组是有序的数据集合
//数组的操作
//1.增
var courses = ["玩儿转Swift","玩儿转Swift第一季","玩儿转Swift第二季"]
courses.append("玩儿转Swift第三季")
print(courses)
courses += ["玩儿转Swift第四季"]
courses = courses + ["玩儿转Swift面向协议编程","玩儿转Swift面向函数编程"]
print(courses)
courses.insert("玩儿转Swift设计模式", at: 5)//5是索引值，从1开始
courses.remove(at: 4)
//删
//courses.removeSubrange(0..<4)
//print(courses)
//改
courses[0..<4] = ["玩儿转Swift3"]
print(courses)
//二维数组
var board:Array<Array<Int>> = [[1024,16,2,0],
[256,4,2,0],
[64,2,0,0],
[2,0,0,0]]
board[0]
board[0][0]
board.count
board[0].count
board[0].append(0)
board
board.append([0,0,0,0])
board += [[2,2,2,2]]//二维数组是添加一个元素（二维数组的元素还是数组）
//NSArray
//var array1 = []
var array2 = [1,2,3,4,5] as NSArray
var array3:NSArray = [1,"Hello",3.0]
var array4:[NSObject] = [1 as NSObject,"Hello" as NSObject,3.0 as NSObject]
