Java Challenge - FizzBuzz

This community-built FAQ covers the “FizzBuzz” code challenge in Java. You can find that challenge here, or pick any challenge you like from our list.

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import java.util.*;

public class FizzBuzz {
public static void main(String args) {
System.out.println(fizzbuzz(16));
}

public static ArrayList fizzbuzz(int n)
{
// Write your code here
ArrayList arr = new ArrayList();

for(int i = 1; i <= n; i++)
{
  if(i % 3 == 0 && i % 5 == 0)
  {
    arr.add("FizzBuzz");
  }

  else if(i % 3 == 0)
  {
    arr.add("Fizz");
  }

  else if(i % 5 == 0)
  {
    arr.add("Buzz");
  }

  else
  {
    arr.add(i);
  }
}

return arr;

}
}

I struggled a bit before I realised that the order do matter in regards to “FizzBuzz” :slight_smile:

public static ArrayList fizzbuzz(int n)
{
    ArrayList<Object> fizzBuzz = new ArrayList<Object>();

    // Looping from 1 -> n
    for (int i = 1; i <= n; i++) {

        // It's important to check FizzBuzz first else you only get buzz or fizz added to the ArrayList. The order matters!
        if (((i % 3) == 0) && ((i % 5) == 0)) {
            fizzBuzz.add("FizzBuzz");
        } else if ((i % 5) == 0) {
            fizzBuzz.add("Buzz");
        } else if ((i % 3) == 0) {
            fizzBuzz.add("Fizz");
        } else {
            fizzBuzz.add(i);
        }
    }

    return fizzBuzz;
}

}