MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

DATA STRUCTURES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
If the data is in order the best search to use would be a
A
Binary Search
B
Linear Search
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -This type of searching algorithm is used to find the position of a specific value contained in a sorted array. The binary search algorithm works on the principle of divide and conquer and it is considered the best searching algorithm because it’s faster to run.

Detailed explanation-2: -It can only works on data that is sorted, usually in increasing order. The algorithm works by selecting a middle point in an array, then divides the array into three parts: the part that is less than the middle, the middle, and the part that is greater than the middle.

Detailed explanation-3: -Binary search is an efficient algorithm for finding an item from a sorted list of items. It works by repeatedly dividing in half the portion of the list that could contain the item, until you’ve narrowed down the possible locations to just one. We used binary search in the guessing game in the introductory tutorial.

Detailed explanation-4: -The main advantage of using binary search is that it does not scan each element in the list. Instead of scanning each element, it performs the searching to the half of the list. So, the binary search takes less time to search an element as compared to a linear search.

Detailed explanation-5: -Linear search can be suitable for searching over an unsorted array. whereas, Elements in the array need to be in sorted order for binary search. The binary search algorithm uses the divide-and-conquer approach, it does not scan every element in the list. Hence, It is the best search algorithm.

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