Fizz Buzz Problem

Problem Statement

FizzBuzz is a common interview problem in which a program prints a number series from 1 to n such that for every number that is a multiple of 3 it prints “fizz”, for every number that is a multiple of 5 it prints “buzz” and for every number that is a multiple of both 3 and 5 it prints “fizzbuzz”. We will be creating a multi-threaded solution for this problem. Suppose we have four threads t1, t2, t3 and t4. Thread t1 checks if the number is divisible by 3 and prints fizz. Thread t2 checks if the number is divisible by 5 and prints buzz. Thread t3 checks if the number is divisible by both 3 and 5 and prints fizzbuzz. Thread t4 prints numbers that are not divisible by 3 or 5. The workflow of the program is shown below:

The code for the class is as follows:

class MultithreadedFizzBuzz {

    private int n;

    public MultithreadedFizzBuzz(int n) {
        this.n = n;
    }

    public void fizz() {
        System.out.print("fizz");
    }

    public void buzz() {
        System.out.print("buzz");        
    }

    public void fizzbuzz() {
        System.out.print("fizzbuzz");
    }

    public void number(int num) {
        System.out.print(num);        
    }
}

For an input integer n, the program should output a string containing the words fizz, buzz and fizzbuzz representing certain numbers. For example, for n = 15, the output should be: 1, 2, fizz, 4, buzz, fizz, 7, 8, fizz, buzz, 11, fizz, 13, 14, fizzbuzz.

Solution

We will solve this ...