MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

DATA STRUCTURES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does a sorting algorithm do?
A
Finds an item of data in a set of data
B
Saves a set of data
C
Puts a list of items into order
D
None of the above
Explanation: 

Detailed explanation-1: -What is a Sorting Algorithm? Sorting algorithms are a set of instructions that take an array or list as an input and arrange the items into a particular order. Sorts are most commonly in numerical or a form of alphabetical (or lexicographical) order, and can be in ascending (A-Z, 0-9) or descending (Z-A, 9-0) order.

Detailed explanation-2: -A sorting algorithm is a method for reorganizing a large number of items into a specific order, such as alphabetical, highest-to-lowest value or shortest-to-longest distance. Sorting algorithms take lists of items as input data, perform specific operations on those lists and deliver ordered arrays as output.

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.

Detailed explanation-4: -Some algorithms (selection, bubble, heapsort) work by moving elements to their final position, one at a time. You sort an array of size N, put 1 item in place, and continue sorting an array of size N – 1 (heapsort is slightly different).

Detailed explanation-5: -Sorting is the process of arranging data into meaningful order so that you can analyze it more effectively. For example, you might want to order sales data by calendar month so that you can produce a graph of sales performance.

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