How can we create array of array list in kotlin?

Question

var l=Array<ArrayList<Int>()>(5){};

I tried the above code but, it gave me a compile time error. What is the correct way to achieve this?.

zsmb13 · Accepted Answer · 2018-09-14 06:18:30Z

4

This is the full syntax to do this:

val l: Array<ArrayList<Int>> = Array<ArrayList<Int>>(5) { ArrayList<Int>() }

You can simplify this in a couple of ways, for example you can leave out the type on the left:

val l = Array<ArrayList<Int>>(5) { ArrayList<Int>() }

And then you can also leave out some more of the types, either of these ways:

val l = Array<ArrayList<Int>>(5) { ArrayList() }
val l = Array(5) { ArrayList<Int>() }

answered Sep 14, 2018 at 6:18

zsmb13

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1 Comment

Thanks, It helped me.