Kotlin Test 2

Question 1

Is the Java programming language compatible with Kotlin?

Accepted Answer

Yes

Answer

Explanation:
Yes, Kotlin and Java are fully compatible: Kotlin programmers may use all Java frameworks and libraries while writing more readable and succinct code. As a result, when developing a mobile product, Android engineers can use both languages and transition their applications from Java to Kotlin.

Question 2

Which Kotlin transformation functions create pairs from elements in both collections that have the same position?

Accepted Answer

zip()

Answer

Explanation:
The zipping transformation creates pairs from elements in both collections that have the same position. The zip () extension function in the Kotlin standard library accomplishes this. Zip () returns the List of Pair objects when called on a collection or an array with another collection (or array) as an argument.

Question 3

The inferred type is applied to all variables in Kotlin that are initialized with integer values.

Accepted Answer

Int

Answer

Explanation:
Numbers are represented by a collection of built-in types in Kotlin. There are four varieties of integer numbers, each with a different size and thus a different value range. The inferred type Int is applied to all variables that are initialized with integer values that do not exceed the maximum value of Int.

Question 4

Which Kotlin extension function returns the requested number of collection elements, starting with the first?

Accepted Answer

take()

Answer

Explanation:
Use the take () function to get the required number of elements starting from the first. Use takeLast to get the last elements (). Both functions return the entire collection when called with a number greater than the collection size.

Question 5

Which Kotlin visibility modification makes a function visible from anywhere?

Accepted Answer

public

Answer

Explanation:
The visibility of Kotlin Four Modifiers is set to public by default, which means it may be seen from anywhere. There are four levels of visibility: public, private, protected, and internal.

Kotlin Practice Test

Kotlin Practice Test

Kotlin Test 2