Kotlin - Collections Fundamentals
Which of the following is the correct syntax to create an array of size 5 with all elements initialized to zero in Kotlin?
Which of the following is the correct syntax to create an array of size 5 with all elements initialized to zero in Kotlin?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Understand Array constructor usage
Kotlin'sArray(size) { init }creates an array of given size, initializing each element with the lambda result.Step 2: Evaluate options
val arr = Array(5) { 0 }correctly usesArray(5) { 0 }to create an array of 5 zeros.val arr = Array(0, 0, 0, 0, 0)is invalid syntax.val arr = Array(5, 0)is invalid syntax.val arr = IntArray(5, 0)is invalid becauseIntArrayconstructor takes only size or size with init lambda, not two parameters.Final Answer:
val arr = Array(5) { 0 } -> Option CQuick Check:
Use Array(size) { value } to initialize [OK]
Quick Trick: Use Array(size) with lambda to initialize all elements [OK]
Common Mistakes:
MISTAKES- Passing two parameters to Array constructor incorrectly
- Confusing IntArray constructor parameters
- Passing multiple values directly to Array constructor
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