JavaScript Mastery from Zero to Hero - Prepare for Coding Interviews - Solution I - Write a Factorial Function in JavaSc

The video tutorial guides viewers through solving a problem using JavaScript by implementing a function to calculate factorials. It begins with an introduction to the problem, followed by a detailed explanation of factorials and how to set up the function. The tutorial then walks through the implementation using a for loop, testing the solution, and validating the results. Finally, it discusses alternative solutions and concludes with encouragement for further exploration of JavaScript algorithms.

What is the first step recommended when approaching a coding problem?

• Read the instructions carefully

• Start coding immediately

• Ask for help

• Search online for solutions

What does the factorial of a number represent?

• The difference between the number and zero

• The division of the number by two

• The product of all positive integers up to that number

• The sum of all numbers up to that number

Why is it important to initialize the product variable to one in a factorial function?

• To make the code more complex

• To prevent affecting the multiplication result

• To simplify addition operations

• To ensure the result is always zero

In the factorial function, what does the for loop do?

• Multiplies numbers from one to the given number

• Subtracts numbers from the given number to one

• Adds numbers from one to the given number

• Divides numbers from the given number to one

What is the purpose of using the multiplication equals operator in the factorial function?

• To divide the numbers

• To add the numbers

• To multiply the numbers

• To subtract the numbers

What was the result of the factorial function when tested with the number seven?

• 24

• 120

• 5040

• 720

What is suggested as an alternative approach to solving the factorial problem?

• Using a switch statement

• Using a while loop

• Using recursion

• Using a decrementing for loop