Insertion Sort in Kotlin

Insertion sort is a simple sorting algorithm that builds the final sorted array (or list) one item at a time.

It is much less efficient on large lists than more advanced algorithms such as quicksort, heapsort, or merge sort.

fun <T:Comparable<T>> insertionsort(items:MutableList<T>):List<T>{ if (items.isEmpty()){ return items } for (count in 1..items.count() - 1){ val item = items[count] var i = count while (i>0 && item < items[i - 1]){ items[i] = items[i - 1] i -= 1 } items[i] = item } return items } fun main(args: Array<String>) { val names = mutableListOf("John", "Tim", "Zack", "Daniel", "Adam") println(names) var ordered = insertionsort(names) println(ordered) }
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