[Solved] What is the output of this Kotlin code?val map = mapOf("x" to 10, "y" to 20) for ((k, v) in map) { println("$k$v") } | Kotlin

Kotlin - Collections Fundamentals

What is the output of this Kotlin code?

val map = mapOf("x" to 10, "y" to 20)
for ((k, v) in map) {
  println("$k$v")
}

ASyntax error

B10x\n20y

Ck v\nk v

Dx10\ny20

Step-by-Step Solution

Solution:

Step 1: Understand map entries and destructuring
The map has entries "x" to 10 and "y" to 20. The loop destructures each entry into k and v.
Step 2: Print key and value concatenated
Inside the loop, println("$k$v") prints key and value together without space, so outputs are "x10" and "y20" on separate lines.
Final Answer:
x10\ny20 -> Option D
Quick Check:
Print key + value per entry [OK]

Quick Trick: Destructure map entries to print key and value [OK]

Common Mistakes:

MISTAKES

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