MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

ALGORITHMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a binary search?
A
Each item is checked in order
B
The list is split into 2 and compared
C
The first 2 values are compared and moved
D
Nothing happens
Explanation: 

Detailed explanation-1: -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.

Detailed explanation-2: -‌During Binary search, the list is split into two parts to get the middle element: there is the left side, the middle element, and the right side. The left side contains values smaller than the middle element and the right side contains values that are greater than the middle element.

Detailed explanation-3: -Binary search compares the target value to the middle element of the array. If they are not equal, the half in which the target cannot lie is eliminated and the search continues on the remaining half, again taking the middle element to compare to the target value, and repeating this until the target value is found.

Detailed explanation-4: -Binary search works on the divide and conquer approach, i.e. the list from which the search is to be done is divided into two halves, and then the searched element is compared with the middle element in the array.

Detailed explanation-5: -Binary search follows the divide and conquer approach in which the list is divided into two halves, and the item is compared with the middle element of the list. If the match is found then, the location of the middle element is returned.

There is 1 question to complete.