Kotlin Basic QuizBy Parvesh Sandila / September 15, 2023 Welcome to your Kotlin Basic Questions Name Email 1. What is the output of the following Kotlin program? fun main() { var a = 5 var b = 10 a = b.also { b = a } println("After swapping: a = $a, b = $b")} After swapping: a = 0, b = 0 This program will not compile. After swapping: a = 5, b = 10 After swapping: a = 10, b = 5 None 2. Which Kotlin feature helps prevent null pointer exceptions? Star operator (*) Elvis operator (?:) Arrow operator (->) Unicorn operator (->>) None 3. How can you define a read-only property in Kotlin? Using the "get" keyword Using the "var" keyword Using the "val" keyword Using the "readonly" keyword None 4. What is the output of the following Kotlin program? fun main() { var fib1 = 0 var fib2 = 1 for (i in 1..10) { print("$fib1, ") val next = fib1 + fib2 fib1 = fib2 fib2 = next }} 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, This program will not compile. None 5. Given the following Kotlin program, what will be the value of max? val num1 = 10val num2 = 25val num3 = 15val max = if (num1 >= num2 && num1 >= num3) num1else if (num2 >= num1 && num2 >= num3) num2else num3 30 25 15 10 None 6. What is the output of the following Kotlin program? fun main() { val numbers = arrayOf(1, 2, 3, 4, 5) val sum = numbers.reduce { acc, num -> acc + num } println(sum)} 10 3 15 120 None 7. In Kotlin, what keyword is used to declare a function? func fun method proc None 8. What is the entry point of a Kotlin program? main() function run() method start() function execute() function None 9. What is the range operator used to create a range of numbers in Kotlin? .. :: -> -- None 10. In Kotlin, what is the purpose of the "fun" keyword? It stands for "funny" It defines a new data type It declares a function It specifies a variable's data type None 11. What does the following Kotlin program do? fun main() { var n = 10 var factorial = 1 while (n > 0) { factorial *= n n-- } println(factorial)} Calculates the factorial of 10. Calculates the sum of the first 10 numbers. Prints the first 10 prime numbers. Prints the numbers from 10 to 1 in reverse order. None 12. In Kotlin, which keyword is used to declare a variable that cannot be reassigned? const val let var None 13. In Kotlin, which collection type represents an ordered list of elements? Set List Map Array None 14. Given the following Kotlin program, what will be the value of result? val x = 5val y = 3val result = x * y 8 53 15 3 None 15. How do you declare a nullable variable in Kotlin? Using the ! operator Using the # symbol Using the * symbol Using the ? operator None 1 out of 15