Insertion sort is especially useful in sorting linked list data structures. As you know, Linked lists have pointers pointing to its next element (singly linked list) and previous element (double linked list). This makes it easier to keep track of the previous and next elements.

What type of sort is insertion sort?

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.

Which sort is used for linked list?

Merge sort is often preferred for sorting a linked list. The slow random-access performance of a linked list makes some other algorithms (such as quicksort) perform poorly, and others (such as heapsort) completely impossible.