Comparison operators in Swift - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to check if a is equal to b.

Swift

let isEqual = a [1] b

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

A==

B=

C!=

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' instead of '==' for comparison.

Using '!=' which checks for inequality.

The operator == checks if two values are equal in Swift.

2fill in blank

medium

Complete the code to check if x is greater than y.

Swift

if x [1] y {
    print("x is greater")
}

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

A>

B<=

C<

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' which means less than.

Using '==' which checks equality.

The operator > checks if the left value is greater than the right value.

3fill in blank

hard

Fix the error in the code to check if number is not equal to 10.

Swift

if number [1] 10 {
    print("Number is not 10")
}

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

A=

B!=

C<

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '=' which causes a syntax error in condition.

Using '==' which checks for equality, not inequality.

The operator != checks if two values are not equal.

4fill in blank

hard

Fill both blanks to create a dictionary of words and their lengths, including only words longer than 3 characters.

Swift

let lengths = [String: Int](uniqueKeysWithValues: words.map { word in (word, word[1]) }).filter { $0.value [2] 3 }

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

A.count

B>

C<

D==

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>' in the filter condition.

Using '==' which only selects words of length exactly 3.

.count gets the length of the word, and > filters words longer than 3 characters.

5fill in blank

hard

Fill all three blanks to create a dictionary with uppercase keys and values greater than 0.

Swift

let result = Dictionary(uniqueKeysWithValues: data.map { ([1], [2]) in ([3], [2]) }).filter { $0.value > 0 }

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

Akey

Bvalue

Ckey.uppercased()

Ditem

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'item' instead of 'key' or 'value'.

Not converting the key to uppercase.

key and value are tuple names, and key.uppercased() converts the key to uppercase.