Discussion on: Kotlin - Smart Solutions #0

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Thanks for sharing the post. The same could have being achieved using zipNext and summing the difference between each pair. Wondering which solution will be more optimized behind the scene.

Henrique Horbovyi • Apr 13 '20

That's awesome! Could you type some snippets? I'm very interested to compare these two solutions.
Thanks for the answer! :D

Amit • Apr 13 '20

Something like following:

fun main() {
    println(listOf(6, 2, 3, 8).sorted().zipWithNext().sumBy { (smallerStatueHeight, biggerStatueHeight) ->  biggerStatueHeight - smallerStatueHeight - 1})
}

Henrique Horbovyi • Apr 13 '20 • Edited

Great solution dude.
I'm comparing both solutions using measureTimeMillis()

Henrique Horbovyi • Apr 13 '20

I executed several times, and the result is always Time(caseA) < Time(caseB) :D
And nevermind the order of execution it will take more or less the same time for both

Henrique Horbovyi • Apr 13 '20

But the scenario changes a bit when I executed on Kotlin Playground
The results tend to be more approximated