JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Solution - Convert an Exponential Solution to a L

The video tutorial explains how to calculate the Fibonacci sum without using recursion. It begins with an introduction to the problem, followed by setting up a function to solve it. The instructor explains the loop logic used to calculate Fibonacci numbers and demonstrates debugging and testing with examples. The video concludes with an optimization of the solution for efficiency, highlighting the benefits of a linear approach over recursion.

What is the main task described in the video regarding Fibonacci numbers?

• Determine the average of Fibonacci numbers.

• Find the largest Fibonacci number.

• Calculate the sum of Fibonacci numbers.

• Calculate the product of Fibonacci numbers.

Why is recursion avoided in the Fibonacci sum calculation?

• It is not supported in the programming language used.

• It can lead to stack overflow.

• It is too complex.

• It is too slow.

What is the purpose of the 'temp' variable in the Fibonacci calculation?

• To store the final result.

• To keep track of the current Fibonacci number.

• To store the sum of all Fibonacci numbers.

• To temporarily hold the previous Fibonacci number.

How does the code ensure that the loop does not become infinite?

• By decrementing the number each iteration.

• By using a break statement.

• By checking a condition outside the loop.

• By using a return statement.

What is the initial value of the 'current number' variable in the Fibonacci calculation?

• 5

• 2

• 1

• 0

What happens when the input number is zero in the Fibonacci function?

• The function throws an error.

• The function enters an infinite loop.

• The function returns 0.

• The function returns 1.

What is the result of the Fibonacci function when the input is 3?

• 2

• 1

• 4

• 3

How is the Fibonacci sum calculated in the final solution?

• By subtracting each Fibonacci number from a total.

• By adding each Fibonacci number to a sum variable.

• By multiplying all Fibonacci numbers.

• By dividing the total by the number of terms.

What advantage does the linear method have over recursion in this context?

• It uses less memory.

• It produces more accurate results.

• It is easier to understand.

• It is faster and avoids freezing.

What is the final output when the input to the Fibonacci sum function is 10?

• 144

• 100

• 55

• 10