Kotlin - Collections Fundamentals
What will be the output of this Kotlin code?
val list = listOf(1, 2, 3) println(list.size)
What will be the output of this Kotlin code?
medium📝 Predict Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand listOf creates an immutable list with 3 elements
The list contains elements 1, 2, and 3, so size is 3.Step 2: Print the size property
Printing list.size outputs the number of elements, which is 3.Final Answer:
3 -> Option CQuick Check:
listOf size = 3 [OK]
Quick Trick: listOf size equals number of elements [OK]
Common Mistakes:
MISTAKES- Expecting error when accessing size
- Confusing size with last element
- Thinking list is empty
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