Can binary search be used for unsorted list?

You can use binary search on only one kind of “unsorted” array – the rotated array. It can be done in O(log n) time like a typical binary search, but uses an adjusted divide and conquer approach.

Can binary search be used for unsorted array?

You can’t apply binary search on an unsorted list. The algorithm makes the assumption that the list is sorted in ascending/descending fashion.

Which search works on both sorted and unsorted array?

linear search
The one pre-requisite of binary search is that an array should be in sorted order, whereas the linear search works on both sorted and unsorted array.

Can we apply binary search for a sorted linked list if no Justify your answer if yes write an algorithm to apply same Will it be same efficient as binary search for arrays?

No we cannot apply binary search algorithm to a sorted linked list, since there is no way of indexing the middle element in the list. This is the drawback in using linked list as a data structure.

Why can’t a binary search be applied on the list below?

One of the most common ways to use binary search is to find an item in an array. For example, the Tycho-2 star catalog contains information about the brightest 2,539,913 stars in our galaxy. Suppose that you want to search the catalog for a particular star, based on the star’s name.

Can you binary search a linked list?

Yes, Binary search is possible on the linked list if the list is ordered and you know the count of elements in list. But While sorting the list, you can access a single element at a time through a pointer to that node i.e. either a previous node or next node.

What search algorithm must you use if the array is unsorted?

Sequential search is the best that we can do when trying to find a value in an unsorted array.

Why Cannot we apply binary search on traditional linked list?

The answer is No. You will have to write your own, possibly inefficient algorithm to get the value of the middle node of a linked list. In a linked list, you loosse the ability to get the value of any node in a constant time.

Why is binary search not suitable for linked list?

The main problem that binary search takes O(n) time in Linked List due to fact that in linked list we are not able to do indexing which led traversing of each element in Linked list take O(n) time. In this paper a method is implemented through which binary search can be done with time complexity of O(log2n).

When can we not use binary search?

In computer science, binary search, also known as half-interval search, logarithmic search, or binary chop, is a search algorithm that finds the position of a target value within a sorted array. Wikipedia The Array you use is not sorted and thus Binary Search does not work on it.

Can binary search be used for list of element in random order?

Yes probably you are right.

Why is binary search strategy unsuitable for linked lists?

The time complexity of binary search is based on random access to any element in constant time. With a linked list there is no constant-time random access. The time complexity for binary search would increase from with an array to with a linked list, being even worse than a simple linear search.

Why does binary search not work for un-sorted lists?

Binary Search does not work for “un-Sorted” lists. For these lists just do a straight search starting from the first element; this gives a complexity of O (n). If you were to sort the array with MergeSort or any other O (nlogn) algorithm then the complexity would be O (nlogn).

What is the complexity of binary search using quick sort?

If you sort your list using quick or merge sort, the complexity becomes o (n*log n). Part – 1 gets over. Second part of performing a binary search is done on the ‘Sorted list’. The complexity of binary search is o (log n).

Is it possible to apply binary search in O(logn) complexity?

Anyway , Answer is yes, it can be applied. In each next step, size of range will reduce by half and you will have *some* output in O (logN) Complexity . Contrary to what other people say, you can use binary search on an unsorted list.

Does binary search need an array to be efficient?

No, binary search needs a sorted array. You might have other properties of an array that enables you to make a search that is more efficient than a mere iteration but the very nature of binary search necessitates sorted data.