What is correct way to create an arraylist in Kotlin?

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Question:What is correct way to create an arraylist in Kotlin?

1. val map = hashMapOf(1 to "one", 2 to "two", 3 to "three")

2. enum class Color {RED, GREEN, BLUE}

3. val list = arrayListOf(1, 2, 3)

4.val set = hashSetOf(1, 2, 3)

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  1. What is correct way to create an arraylist in Kotlin?
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