freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/rosetta-code/fizzbuzz.md

title	id	challengeType	forumTopicId
FizzBuzz	5e9ddb06ec35240f39657419	5	385370

Description

Write a program that generates an array of integers from 1 to 100 (inclusive). But:

• for multiples of 3, add "Fizz" to the array instead of the number
• for multiples of 5, add "Buzz" to the array instead of the number
• for multiples of 3 and 5, add "FizzBuzz" to the array instead of the number

## Instructions

Your program should return an array containing the results based on the rules above.

Tests

tests:
  - text: <code>fizzBuzz</code> should be a function.
    testString: assert(typeof fizzBuzz=='function');
  - text: <code>fizzBuzz()</code> should return an Array.
    testString: assert(Array.isArray(fizzBuzz())==true);
  - text: Numbers divisible by only 3 should return <code>"Fizz"</code>.
    testString: assert.equal(fizzBuzz()[2], "Fizz");
  - text: Numbers divisible by only 5 should return <code>"Buzz"</code>.
    testString: assert.equal(fizzBuzz()[99], "Buzz");
  - text: Numbers divisible by both 3 and 5 should return <code>"FizzBuzz"</code>.
    testString: assert.equal(fizzBuzz()[89], "FizzBuzz");
  - text: Numbers not divisible by either 3 or 5 should return the number itself.
    testString: assert.equal(fizzBuzz()[12], 13);

Challenge Seed

function fizzBuzz() {

}

Solution

function fizzBuzz() {
    let res=[];
    for (let i =1; i < 101; i++) {
        if (i % 3 === 0  && i % 5 === 0) {
            res.push("FizzBuzz");
        }
        else if (i % 3 === 0) {
            res.push("Fizz");
        }
        else if (i % 5 === 0) {
            res.push("Buzz");
        } 
        else {
            res.push(i);
        }
    }
    return res;
}