Kotlin - Collections Fundamentals
What is the correct way to create an array of integers with values 1, 2, and 3 in Kotlin?
What is the correct way to create an array of integers with values 1, 2, and 3 in Kotlin?
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand array creation syntax
Kotlin usesarrayOf()to create an array with given elements.Step 2: Check each option
val arr = arrayOf(1, 2, 3)usesarrayOf(1, 2, 3)which is correct.val arr = [1, 2, 3]uses square brackets which is invalid in Kotlin.val arr = IntArray(1, 2, 3)which uses invalid constructor arguments for IntArray.val arr = Array(3) { 1, 2, 3 }tries to pass multiple values in a lambda which is incorrect.Final Answer:
val arr = arrayOf(1, 2, 3) -> Option BQuick Check:
Use arrayOf() for arrays with elements [OK]
Quick Trick: Use arrayOf() to create arrays with elements [OK]
Common Mistakes:
MISTAKES- Using square brackets [] like in other languages
- Confusing IntArray with Array
- Trying to pass multiple values in Array constructor lambda
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