Question

Which of the following sorting algorithms cannot be performed on a doubly-linked list?

a) Quick Sort.
b) Merge Sort.
c) Bubble Sort.
d) Insertion Sort.

Answer 1

Quick Sort cannot be performed on a doubly-linked list, but Merge Sort, Bubble Sort, and Insertion Sort can.

Step-by-step explanation:

Of the given sorting algorithms, Quick Sort cannot be performed on a doubly-linked list.

Quick Sort works by selecting a pivot element and partitioning the list into two sublists: elements smaller than the pivot and elements greater than the pivot. However, in a doubly-linked list, there is no easy way to access elements at arbitrary positions, making it difficult to efficiently partition the list.

On the other hand, Merge Sort, Bubble Sort, and Insertion Sort can be performed on a doubly-linked list. Merge Sort recursively divides the list into halves and merges them back together. Bubble Sort compares adjacent elements and swaps them if they are in the wrong order. Insertion Sort iterates through the list and inserts each element at the correct position in the sorted sublist.