Coding Exercise for Beginners in Python with solution | Exercise 17 |Python for Beginners #lec48

FizzBuzz Coding Challenge Explained

Introduction to FizzBuzz

• The video begins with a recap of previous discussions on Python, specifically mentioning the range function and its application in coding exercises.

• The presenter introduces the FizzBuzz problem, a common coding interview question that requires printing numbers from 1 to n (e.g., 1 to 100).

Problem Requirements

• The task involves printing numbers but with specific conditions:

• If a number is divisible by 3, print "Fizz" instead of the number.

• If a number is divisible by 5, print "Buzz" instead of the number.

• If a number is divisible by both 3 and 5, print "FizzBuzz".

Implementation Steps

• A hint is provided about using a for loop and checking three conditions within it. The order of these conditions matters significantly.

• Viewers are encouraged to pause the video and attempt solving the problem before seeing the solution.

Initial Code Attempt

• The presenter starts writing code in a new file named fizzbuzz.py, setting up a for loop that iterates from 1 to 100.

• Three conditional checks are implemented:

• Check if the number is divisible by 3 (print "Fizz").

• Check if it's divisible by 5 (print "Buzz").

• Check if it's divisible by both (print "FizzBuzz").

Debugging Issues

• An initial test run shows correct outputs for numbers up to ten but fails at fifteen where it only prints "Fizz".

• This issue arises because once one condition is met (divisible by three), subsequent conditions are not checked.

Adjusting Conditions

• To fix this, the presenter suggests reordering conditions so that checking for divisibility by both three and five occurs first.

• By adjusting the order of checks—first checking for divisibility by five then three—the output correctly displays "FizzBuzz" for fifteen.

Alternative Solutions

• While this solution works, it’s noted that there are multiple ways to approach this problem.

• The presenter mentions using switch statements as an alternative method to streamline condition checks.

Conclusion

• Viewers are encouraged to explore different solutions and approaches as FizzBuzz remains a popular question in coding interviews.