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kotlinlang

Hi,
how can I take elements between two index in a collection? For example, I have a list of 5 elements and I want to take the second to the fourth elements of this list.

<https://kotlinlang.org/api/latest/jvm/stdlib/kotlin.collections/-list/sub-list.html>

`yourList.subList(1, 4)` (toIndex is exclusive)

Also keep in mind that if you're doing this on a `MutableList` and you mutate the resulting sublist the original will change too.

Is there anyway to optimize this (giving that “tour” is a Set
```        val path = listOf(tour.toList().let {
             it.subList(index, it.size)
        }, tour.toList().subList(0, index)).flatten()
```

I mean... if I understand that correctly, that should be the same as just `tour.toList()`, considering you are making the sub lists 0 to index and then index to size, which will span the whole list.
Right?

it’s actually reversing the list, e.g `listOf(1, 2, 3,4)` becomes `listOf(3, 4, 1, 2)`

Revering lists, hmm, I wonder why you'd need that. <@U0B8CDS1Z> come join us at <#C87V9MQFK|advent-of-code>!

<@U5UU34LPK> i’m trying to solve a TSP problem using the Greedy search algo and the LinKernigan optimisation :slightly_smiling_face: This is part of the LK. I’ll give a look at advent of code and do them when i’ll have time, after finals are over ! :slightly_smiling_face:

Ah that's funny, we had to reverse part of a list for one of the problems too.