Efficient Code Mastery

What is the most efficient way to iterate over a list in Python?

• Use a switch statement

• Use list comprehension

• Use a for loop

• Use a while loop

Which sorting algorithm has the best time complexity for large datasets?

• Selection Sort

• Insertion Sort

• Bubble Sort

• Merge Sort

In terms of algorithmic efficiency, what is the best approach to find the maximum element in an array?

• Use a nested loop to compare each element with all others

• Create a hash table to store elements and their frequencies

• Sort the array and return the last element

• Iterate through the array once while keeping track of the maximum element found.

When optimizing loops, what is the significance of loop unrolling?

• Loop unrolling reduces the overhead of loop control and improves performance by executing multiple iterations of a loop in a single iteration.

• Loop unrolling only works with nested loops

• Loop unrolling increases the overhead of loop control and decreases performance

• Loop unrolling has no impact on loop optimization

Which data structure is most suitable for implementing a priority queue with efficient operations?

• Binary heap

• Stack

• Queue

• Linked list

What is the time complexity of a binary search algorithm?

• O(n)

• O(n^2)

• O(1)

• O(log n)

How can you optimize a recursive function to avoid stack overflow?

• Increase the stack size limit

• Convert the recursive function into an iterative function by using a loop.

• Add more base cases to the recursive function

• Use a different programming language

What is the purpose of memoization in dynamic programming?

• Memoization is only applicable to recursive functions

• Memoization is used to increase the complexity of algorithms

• Memoization is a technique to reduce the number of function calls

• The purpose of memoization in dynamic programming is to store and reuse the results of expensive function calls to improve efficiency.

Which loop construct is generally more efficient in terms of performance - for loop or while loop?

• do-while loop

• while loop

• nested loop

• for loop

What is the time complexity of a bubble sort algorithm?

• O(n^2)

• O(1)

• O(n)

• O(nlogn)