Kotlin Basic QuizBy Parvesh Sandila / September 15, 2023 Welcome to your Kotlin Basic Questions Name Email 1. How can you define a read-only property in Kotlin? Using the "var" keyword Using the "get" keyword Using the "readonly" keyword Using the "val" keyword None 2. What is the entry point of a Kotlin program? main() function run() method execute() function start() function None 3. 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 15 10 30 25 None 4. Which Kotlin feature helps prevent null pointer exceptions? Arrow operator (->) Unicorn operator (->>) Star operator (*) Elvis operator (?:) None 5. In Kotlin, what is the purpose of the "fun" keyword? It declares a function It specifies a variable's data type It defines a new data type It stands for "funny" 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)} 15 3 10 120 None 7. 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 }} This program will not compile. 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, None 8. In Kotlin, which collection type represents an ordered list of elements? Map Array List Set None 9. What is the range operator used to create a range of numbers in Kotlin? -> .. :: -- None 10. In Kotlin, what keyword is used to declare a function? fun func proc method None 11. What is the output of the following Kotlin program? fun main() { var sum = 0 for (i in 1..10) { sum += i } println(sum) } 45 10 55 15 None 12. What is the Kotlin equivalent of a "for loop" in other programming languages? repeat loop while loop for-in loop foreach loop None 13. Given the following Kotlin program, what will be the value of result? val x = 5val y = 3val result = x * y 53 3 8 15 None 14. In Kotlin, which keyword is used to declare a variable that cannot be reassigned? const let val var None 15. 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 sum of the first 10 numbers. Prints the numbers from 10 to 1 in reverse order. Prints the first 10 prime numbers. Calculates the factorial of 10. None 1 out of 15
