FizzBuzz.js

// Given an integer n, return a string array answer (1-indexed) where:

// answer[i] == "FizzBuzz" if i is divisible by 3 and 5.
// answer[i] == "Fizz" if i is divisible by 3.
// answer[i] == "Buzz" if i is divisible by 5.
// answer[i] == i if non of the above conditions are true.

// Example 1:

// Input: n = 3
// Output: ["1","2","Fizz"]
// Example 2:

// Input: n = 5
// Output: ["1","2","Fizz","4","Buzz"]
// Example 3:

// Input: n = 15
// Output: ["1","2","Fizz","4","Buzz","Fizz","7","8","Fizz","Buzz","11","Fizz","13","14","FizzBuzz"]
const fizzBuzz = function (n) {
  const arr = [];

  for (let i = 1; i <= n; i++) {
    if (i % 15 === 0) {
      arr.push("FizzBuzz");
    } else if (i % 3 === 0) {
      arr.push("Fizz");
    } else if (i % 5 === 0) {
      arr.push("Buzz");
    } else {
      arr.push(i.toString());
    }
  }
  return arr;
};