Editing Sorting algorithm (section)

==== Insertion sort ====
{{Main|Insertion sort}}
''[[Insertion sort]]'' is a simple sorting algorithm that is relatively efficient for small lists and mostly sorted lists, and is often used as part of more sophisticated algorithms. It works by taking elements from the list one by one and inserting them in their correct position into a new sorted list similar to how one puts money in their wallet.<ref>{{cite book |last=Wirth |first=Niklaus |author-link=Niklaus Wirth |title=Algorithms & Data Structures |place=Upper Saddle River, NJ |publisher=Prentice-Hall |year=1986 |isbn=978-0130220059 |pages=76–77}}</ref> In arrays, the new list and the remaining elements can share the array's space, but insertion is expensive, requiring shifting all following elements over by one. [[Shellsort]] is a variant of insertion sort that is more efficient for larger lists.