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The solutions of the 11th-week quiz are given below:-

**[1] **In general, any recursive procedure can be expressed as an equivalent non-recursive procedure.

- (a): True
- (b): False

**Answer: (a)** True

**[2] **Suppose we want to write an algorithm to compute f(n) where f(n) = f(n-1) + f(n-2) and f(0) = 0, f(1) = 1. Which one of the following is true about this algorithm –

- (a): This recursive algorithm is more efficient than the best iterative algorithm.
- (b): This recursive algorithm and the best iterative algorithm are equally efficient
- (c): This recursive algorithm is less efficient than the best iterative algorithm
- (d): Nothing can be said about the relative efficiency of this recursive algorithm and the best iterative algorithms

**Answer: (c)** This recursive algorithm is less efficient than the best iterative algorithm

**[3] **Suppose we want to write an algorithm to compute factorial(n) where n>=0 and f(0) = 1. Which one of the following is true about this algorithm –

- (a): This recursive algorithm is more efficient than the best iterative algorithm.
- (b): This recursive algorithm and the best iterative algorithm are equally efficient
- (c): This recursive algorithm is less efficient than the best iterative algorithm
- (d): Nothing can be said about relative efficiency of this recursive algorithm and the best iterative algorithms

**Answer: (b)** This recursive algorithm and the best iterative algorithm are equally efficient.

**[4] **We should always use a recursive algorithm instead of its equivalent iterative algorithm to solve a problem because a recursive algorithm is easier to implement than equivalent iterative algorithm.

- (a): True
- (b): False

**Answer: (b)** False

**[5] **Which of the following is not true about Tower of Hanoi puzzle –

- (a): puzzle consists of three rods
- (b): Disks in a rod are kept as a stack with largest disk at the top
- (c): Only one disk can be moved at a time
- (d): A disk can only be moved if it is the uppermost disk on a stack

**Answer: (b)** Disks in a rod are kept as a stack with largest disk at the top

**[6] **If there are two disks initially in Tower of Hanoi puzzle then number of disk movements required to solve the puzzle will be –

- (a): 1
- (b): 2
- (c): 3
- (d): 4

**Answer: (c)** 3

**[7] **If n is the number of disks in Tower of Hanoi puzzle and T(n) is the required number of disk movements to solve the puzzle then –

- (a): T(n) = T(n-1) + 1
- (b): T(n) = 2*T(n-1) + 1
- (c): T(n) = 3*T(n-1) + 1
- (d): T(n) = T(n-1) – 1

**Answer: (b)** T(n) = 2*T(n-1) + 1

**Also, see: ** Python Programming Quiz – 10th Week Quiz Solution

**[8] **To solve Tower of Hanoi puzzle, which one of the following is true –

- (a): A recursive algorithm is more efficient than an iterative algorithm
- (b): Any recursive algorithm and any iterative algorithm are equally efficient
- (c): A recursive algorithm is less efficient than an iterative algorithm
- (d): Nothing can be said about relative efficiency of recursive and iterative algorithms

**Answer: (b)** Any recursive algorithm and any iterative algorithm are equally efficient

**[9] **If there are four disks initially in Tower of Hanoi puzzle then number of disk movements required to solve the puzzle will be –

- (a): 13
- (b): 14
- (c): 15
- (d): 16

**Answer: (c)** 15

**[10] **Sorting problem is to search a key in the given sorted sequence.

- (a): True
- (b): False

**Answer: (b)** False

**[11] **An example of a sorting problem is to arrange a given integer-sequence in increasing order.

- (a): True
- (b): False

**Answer: (a)** True

**Also See:-** Some Tips to Release Anger in 5 days

**[12] **What is easy to do in a sorted list –

- (a): Searching a key
- (b): Rank query
- (c): Quantile query
- (d): All

**Answer: (d) **All

**[13] **There is only one algorithm to solve sorting problem.

- (a): True
- (b): False

**Answer: (b)** False

**[14] **An English dictionary can be termed as a sorted list of strings over English alphabet.

- (a): True
- (b): False

**Answer: (a)** True

**[15] **Why are local variable names beginning with an underscore discouraged in python –

- (a): They are used to indicate the private variables of a class
- (b): They confuse the interpreter
- (c): They are used to indicate global variables
- (d): They slow down execution

**Answer: (a) **They are used to indicate the private variables of a class

That’s all for the 11th-week solution for Python Quiz -Programming. if you have any questions, please comment down below, we will try to answer with in the first 24 hours. I hope you liked this content.

I am lot of thankyou.