How to Solve a FizzBuzz Algorithm Problem

https://www.ezrahill.co.uk/2019/04/14/the-fizzbuzz-question/

What is FizzBuzz?

FizzBuzz is a simple and popular programming problem, sometimes given in Software Developer coding interviews to test programming ability. The problem is set up like this:

Create a function (we’ll call it fizzBuzz) that will print numbers from 1 to 100, with certain exceptions:

1. If the number is a multiple of 3, print “Fizz” instead of the number.
2. If the number is a multiple of 5, print “Buzz” instead of the number.
3. If the number is a multiple of 3 and 5, print “FizzBuzz” instead of the number.

Partial Example of fizzBuzz function output

Partial Example of fizzBuzz Function Output

fizzBuzz function with pseudocode👇🏾

function fizzBuzz(){
  // multiple of 3 and 5, print “FizzBuzz”
  // multiple of 3, print “Fizz”
  // multiple of 5, print “Buzz”
}

Now let’s get to solving!

Step 1: Create a For Loop

For loops are used to repeat a section of code n times. A for loop serves our purpose perfectly because we want to print numbers from 1–100 with certain exceptions.

for (let i=1; i<=100; i++) {
}

Step 2: Create IF…ELSE Statements

Step 2.1: Create An IF Statement For Multiples of 3 & 5

In our if statement we check to see if a given number(i) has a remainder of 0 when divided by both 3 & 5, this would make it a multiple and thus we would print “FizzBuzz”:

// multiple of 3 and 5, print “FizzBuzz”
if (i % 3 === 0 && i % 5 === 0){
  console.log("FizzBuzz")
}

Step 2.2: Create An ELSE IF Statement For Multiples of 3

Now we will create our else if statement that will account for numbers that are multiples of 3 and print “Fizz”:

// multiple of 3, print “Fizz”
else if (i % 3 === 0){
  console.log("Fizz")
}

Step 2.3: Create An ELSE IF Statement For Multiples of 5

We will create another else if statement that will account for numbers that are multiples of 5 and print “Buzz”:

// multiple of 5, print “Buzz”
else if (i % 5=== 0){
  console.log("Buzz")
}

Step 2.4: Create An ELSE Statement For Multiples of Neither 3 Nor 5

We can’t forget numbers that aren’t multiple of 3 or 5, we will just print those numbers:

// multiple of neither 3 nor 5, print number
else{
  console.log(i)
}

The Final Product

If you found this helpful, stay tuned for more articles where I’ll be solving common algorithm problems!😊🎉