Which of the following is the correct syntax to create a mutable map with keys "a" and "b" and values 1 and 2 respectively?

easy📝 Syntax Q12 of 15

Kotlin - Collections Fundamentals

Aval map = mutableMapOf("a" to 1, "b" to 2)

Bval map = mapOf("a" -> 1, "b" -> 2)

Cval map = mutableMapOf("a" = 1, "b" = 2)

Dval map = mapOf("a" to 1, "b" to 2)

Step-by-Step Solution

Solution:

Step 1: Identify correct syntax for mutableMapOf
The correct syntax uses mutableMapOf with pairs using to keyword.
Step 2: Check each option
val map = mutableMapOf("a" to 1, "b" to 2) uses mutableMapOf and to correctly. val map = mapOf("a" -> 1, "b" -> 2) uses wrong arrow ->. val map = mutableMapOf("a" = 1, "b" = 2) uses = which is invalid here. val map = mapOf("a" to 1, "b" to 2) uses mapOf which creates an immutable map.
Final Answer:
val map = mutableMapOf("a" to 1, "b" to 2) -> Option A
Quick Check:
mutableMapOf + to = correct syntax [OK]

Quick Trick: Use mutableMapOf with "key" to value pairs [OK]

Common Mistakes:

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