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kotlinlang

Hi, can you help me understand why I got such a strange execution times with my solution for the last challenge? <https://kotlinlang.slack.com/archives/C0922A726/p1544400345429600>

If you're literally doing `current.prev.prev.prev.prev.prev.prev.prev` - these are nested calls which could be expensive (I think). Try doing it like `repeat(7) { current = current.prev }`

Yeah, I’ve tried that first. Got same execution time as with `.prev.prev`.