Information about the 15.swift array

/********************** Array definition **************************/

array : Array represents data

// Let decorated identifiers are immutable groups ( cannot be modified after element is determined )

The //var modifier identifier is a mutable array ( elements can be added and removed )

Note :

//1> definition array is used [], and does not need to add @

//2> Typically, an array is a generic collection , and all typically specifies which elements can be stored in the array

// immutable variable Group One : defines an array in which all strings are stored

Let names: Array<String> = ["Why", "LMJ", "Lnj", "YZ" ]

// immutable Arrays Two : defines an array in which all strings are stored

let names1: [String] = ["Why", "LMJ", "Lnj", "YZ"]

// immutable Arrays Two : defines an array in which all strings are stored

Let names2 = ["Why", "LMJ", "Lnj", "YZ"]

// No element can be added

Names.append ("22")

// array to hold multiple data types in the notation

Let array: [anyobject] = ["Why", 1.88]

// variable array

// Create variable array mode one :

var array1: [String] = Array()

// common variable array mode two :

var array2 = [String] ()

/********************** array Operation **************************/

adding elements : through the Append method

Array1. Append ("Why")

Array1. Append ("LNJ")

// Delete element

Let removestring = array1. Removeatindex (0)

Array1

// Modify Element

Array1[0] = "LMJ"

Array1

// get the values in the array

Let str = array1[0]

// Gets the number of elements in the array

Let count = array1. Count

/********************** Array Traversal **************************/

// traverse mode one :

for i in 0.. <names. Count {

Print (names[i])

}

traversal mode two : Forin

for item in names {

Print (item)

}

// traversal mode three : interval traversal

for item in names[0.. <2] {

Print (item)

}

/********************** Merging **************************/

//1. Merge of the same type

Let names5 = ["LMJ", "LNJ"]

Let names6 = ["YZ", "why"]

Let Names7 = names5 + names6

//2. Different types of merges : not additive

var array5 = ["Why", ]

Let array6 = [1.88, 60.5]

Let Array7 = Array5 + array6

for item in array6 {

array5. Append (item)

}

Array5

// Note : It is not recommended to store multiple elements in an array

Information about the 15.swift array