学习swift从青铜到王者之Swift集合数据类型03

var array1 = [2,3,4,5]
var array2: Array = [2,3,4,5]
var array3: Array<Int> = [2,3,4,5]
var array4: [Int] = [2,3,4,5]

var array:Array<Any> = ["a", 2, 2.4]

//数组元素的访问
var array1 = ["a", "b", "c"]
print(array1[0])//a
//数组元素-增加
var array2 = ["a", "b", "c"]
array2.append("d")
print(array2)//["a", "b", "c", "d"]
//数组某个位置插入元素
var array3 = ["a", "b", "c"]
array3.insert("f", at: 0)
print(array3)//["f", "a", "b", "c", "d"]
//数组元素的修改
var array4 = ["a", "b", "c"]
array4[0] = "d"
print(array4)//["d", "b", "c"]
//数组元素的删除
var array5 = ["a", "b", "c"]
array5.remove(at: 0)
print(array5)//["b", "c"]

//第一种 for in方式
for item in array {
print("\(item)")
}
//第二种 索引－值方式enumerate（）
for (index, item) in array.enumerated(){
print("索引:\(index)  值:\(item)")
}

var dict: Dictionary<String, Any> = ["name" : "yhx", "age" : 18]

// 定时字典的同时,进行初始化
var dict: Dictionary<String, Any> = ["name" : "yhx", "age" : 18]

// 添加数据
dict["height"] = 1.7
dict["weight"] = 60
// 删除字段
dict.removeValue(forKey: "height")
// 修改字典
dict["name"] = "yhx1"
dict.updateValue("yhx2", forKey: "name")
// 查询字典
dict["name"]

// 定时字典的同时,进行初始化
var dict: Dictionary<String, Any> = ["name" : "yhx", "age" : 18]
// 遍历字典中所有的值
for value in dict.values {
print(value)
}
// 遍历字典中所有的键
for key in dict.keys {
print(key)
}
// 遍历所有的键值对
for (key, value) in dict {
print(key)
print(value)
}

// 字典的合并
var dict1:Dictionary<String, Any> = ["name" : "yhx", "age" : 18]
var dict2:Dictionary<String, Any> = ["height" : 1.7, "phoneNum" : "10086"]
// 字典并不可以相加合并
for (key, value) in dict1 {
dict2[key] = value
}
print(dict2)