Infosys Certified iOS Swift App Developer

When the below code finishes execution, how many strings will the names array contain ?

let names = [String]()
names.append("Annie")
names.append("John")
names.append("Derik")

let names = ["Amy","Sam","Sandy"]

By using the names array, I would like to print as below: Select the correct code snippet for that

Hello, Amy!
Hello, Sam!
Hello, Sandy!

A. for i in 0...names.count {
     print("Hello , \(names[i]) !")
}


B. for i in 0..names.count {
     print("Hello , \(names[i]) !")
}


C. for i in 0..<names.count {
     print("Hello , \(names[i]) !")
}


D. for i in 0..<names.length {
     print("Hello , \(names[i]) !")
}

Which of the following statements is correct about Tuple?

When the below code finishes execution, what will be the value of "streets" ?

var streets = ["Acacia Road", "Buckfast Street", "Corn Street", "Ducal Place", "English Street"]
streets[1] = "?"
print(streets)

Select the true statements from below: (Choose 3)

What will be printed once the below code is executed ?

var arrayA:[String] = []               
var arrayB = [String]()  

if (arrayA == arrayB)
	{print ("arrayA and arrayB are the same")}
else 
	{print ("arrayA and arrayB are different")}

What will be the value of message variable when printed ?

var message = "Apple is my favorite fruit"                //Line 1
message.replacingOccurrences(of: "Apple", with: "Mango")  //Line2
print(message)

What output will be produced by the below code ?

let number = 9.0
print("\(number) squared is \(number * number), and its square root is \(sqrt(number))")

Below code snippet is an example of :

let certName:String? = "Swift"
	if let digitalTag = certName {
		print(digitalTag)
	}

_________ enable you to create and pass around groupings of values and can return multiple values from a function as a single compound value.