String is a value type behavior in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new string variable.

Swift

var greeting = "Hello"
var newGreeting = [1]

Drag options to blanks, or click blank then click option'

Agreeting

B*greeting

C&greeting

Dgreeting()

Attempts:

3 left

💡 Hint

Common Mistakes

Using & or * which are not used for copying in Swift.

Trying to call the variable as a function.

Strings in Swift are value types, so assigning greeting to newGreeting copies the value.

2fill in blank

medium

Complete the code to change the copy without affecting the original string.

Swift

var original = "Swift"
var copy = original
copy[1]"SwiftLang"

Drag options to blanks, or click blank then click option'

A ==

B +=

C+

D =

Attempts:

3 left

💡 Hint

Common Mistakes

Using comparison operators like == instead of assignment.

Using += which appends instead of replacing.

Assigning a new value to copy changes only the copy because strings are value types.

3fill in blank

hard

Fix the error in the code to correctly copy and modify the string.

Swift

var text1 = "Hello"
var text2 = text1
text2.append([1])

Drag options to blanks, or click blank then click option'

A5

B" World"

CWorld

D' World'

Attempts:

3 left

💡 Hint

Common Mistakes

Using single quotes which are not valid for strings in Swift.

Passing a number instead of a string.

The append method requires a string argument, so use a string literal with double quotes.

4fill in blank

hard

Fill both blanks to create a copy and check if original and copy are equal.

Swift

var first = "Apple"
var second = [1]
let areEqual = first [2] second

Drag options to blanks, or click blank then click option'

Afirst

B==

C=

D!=

Attempts:

3 left

💡 Hint

Common Mistakes

Using = instead of == for comparison.

Using != which checks inequality.

Assign first to second to copy the string, then use == to check equality.

5fill in blank

hard

Fill all three blanks to copy a string, modify the copy, and print both strings.

Swift

var original = "Cat"
var copy = [1]
copy.append([2])
print(original, [3])

Drag options to blanks, or click blank then click option'

Aoriginal

B"s"

Ccopy

Doriginal.append("s")

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to append to original instead of copy.

Printing only one variable.

Copy original to copy, append "s" to copy, then print both strings separately.