freeCodeCamp/curriculum/challenges/english/08-coding-interview-prep/rosetta-code/general-fizzbuzz.english.md

title, id, challengeType, forumTopicId

title	id	challengeType	forumTopicId
General FizzBuzz	5a23c84252665b21eecc7e78	5	302273

Description

Write a generalized version of FizzBuzz that works for any list of factors, along with their words. This is basically a "fizzbuzz" implementation where the rules of the game are supplied to the user. Create a function to implement this. The function should take two parameters. The first will be an array with the FizzBuzz rules. For example: [ [3, "Fizz"] , [5, "Buzz"] ]. This indicates that Fizz should be printed if the number is a multiple of 3 and Buzz if it is a multiple of 5. If it is a multiple of both then the strings should be concatenated in the order specified in the array. In this case, FizzBuzz if the number is a multiple of 3 and 5. The second parameter is the number for which the function should return a string as stated above.

Instructions

Tests

tests:
  - text: <code>genFizzBuzz</code> should be a function.
    testString: assert(typeof genFizzBuzz=='function');
  - text: <code>genFizzBuzz([[3, "Fizz"],[5, "Buzz"]], 6)</code> should return a string.
    testString: assert(typeof genFizzBuzz([[3, "Fizz"],[5, "Buzz"]], 6)=='string');
  - text: <code>genFizzBuzz([[3, "Fizz"],[5, "Buzz"]], 6)</code> should return <code>"Fizz"</code>.
    testString: assert.equal(genFizzBuzz([[3, "Fizz"],[5, "Buzz"]], 6), "Fizz");
  - text: <code>genFizzBuzz([[3, "Fizz"],[5, "Buzz"]], 10)</code> should return <code>"Buzz"</code>.
    testString: assert.equal(genFizzBuzz([[3, "Fizz"],[5, "Buzz"]], 10), "Buzz");
  - text: <code>genFizzBuzz([[3, "Buzz"],[5, "Fizz"]], 12)</code> should return <code>"Buzz"</code>.
    testString: assert.equal(genFizzBuzz([[3, "Buzz"],[5, "Fizz"]], 12), "Buzz");
  - text: <code>genFizzBuzz([[3, "Buzz"],[5, "Fizz"]], 13)</code> should return <code>"13"</code>.
    testString: assert.equal(genFizzBuzz([[3, "Buzz"],[5, "Fizz"]], 13), '13');
  - text: <code>genFizzBuzz([[3, "Buzz"],[5, "Fizz"]], 15)</code> should return <code>"BuzzFizz"</code>.
    testString: assert.equal(genFizzBuzz([[3, "Buzz"],[5, "Fizz"]], 15), "BuzzFizz");
  - text: <code>genFizzBuzz([[3, "Fizz"],[5, "Buzz"]], 15)</code> should return <code>"FizzBuzz"</code>.
    testString: assert.equal(genFizzBuzz([[3, "Fizz"],[5, "Buzz"]], 15), "FizzBuzz");
  - text: <code>genFizzBuzz([[3, "Fizz"],[5, "Buzz"],[7, "Baxx"]], 105)</code> should return <code>"FizzBuzzBaxx"</code>.
    testString: assert.equal(genFizzBuzz([[3, "Fizz"],[5, "Buzz"],[7, "Baxx"]], 105), "FizzBuzzBaxx");

Challenge Seed

function genFizzBuzz(rules, num) {
  // Good luck!
}

Solution

function genFizzBuzz(rules, num) {
  let res='';
  rules.forEach(function (e) {
    if(num % e[0] == 0)
      res+=e[1];
  })

  if(res==''){
    res=num.toString();
  }

  return res;
}