Quickselect Multiple choice Questions and Answers (MCQs)

Quickselect Multiple choice Questions and Answers (MCQs)

 Question 1 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is an alternative name of the quickselect algorithm?
 A quick sort B hoare's selection algorithm C tony's selection algorithm D kruskal's algorithm
Question 1 Explanation:
Quick select is a selection algorithm. It was developed by Tony Hoare, thus it is also known as Hoare's selection algorithm.

 Question 2 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Quickselect is an example of .....
 A sorting algorithm B selection algorithm C greedy algorithm D searching algorithm
Question 2 Explanation:
Quickselect is an example of a selection algorithm. It finds the kth smallest element from the given list.

 Question 3 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What will be the output if quickselect algorithm is applied to the array arr={1, 5, 4, 3, 7} with k given as 4?
 A 1 B 3 C 4 D 5
Question 3 Explanation:
Quickselect algorithm finds the kth smallest element from the given list. So as here the given value of k is 4 so we need to find the fourth smallest element which is 5 in the given array.

 Question 4 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the auxiliary space requirement of the quickselect algorithm?
 A O(n2) B O(n) C O(n log n) D O(1)
Question 4 Explanation:
Quickselect algorithm requires no extra space in order to calculate the desired result. It performs manipulations in the given array itself so its auxiliary space requirement will be O(1).

 Question 5 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Quickselect is an in-place algorithm?
 A true B false
Question 5 Explanation:
Quickselect's auxiliary space requirement is O(1). So quickselect qualifies as an in-place algorithm.

There are 5 questions to complete.