Even with the 40% hit rate you can reduce it further by asking what could make i...

buro9 · on Nov 16, 2012

In response to an email asking for an example of a fast fizzbuzz, just avoid division.

    <html>
        <body>
            <script type="text/javascript">
                function fastfizzbuzz() {
                    var fizz = 1, buzz = 1, fizzbuzz = 1;
                    for (var i = 1; i <= 100000000; i++) {
                        if (fizzbuzz == 15) {
                            //document.writeln('fizzbuzz<br />');
                            fizz = 0;
                            buzz = 0;
                            fizzbuzz = 0;
                        } else if(fizz == 3) {
                            //document.writeln('fizz<br />');
                            fizz = 0;
                        } else if(buzz == 5) {
                            //document.writeln('buzz<br />');
                            buzz = 0;
                        } else {
                            //document.writeln(i + '<br />');
                        }

                        fizz++;
                        buzz++;
                        fizzbuzz++;
                    }
                }

                function slowfizzbuzz() {
                    for (var i = 1; i <= 100000000; i++) {
                        if (i % 15 == 0) {
                            //document.writeln('FizzBuzz<br />');
                        } else if (i % 3 == 0) {
                            //document.writeln('Fizz<br />');
                        } else if (i % 5 == 0) {
                            //document.writeln('Buzz<br />');
                        } else {
                            //document.writeln(i + '<br />');
                        }
                    }
                }

                var startTime=new Date();
                fastfizzbuzz();
                var endTime=new Date();
                document.writeln('Fast: ' + (endTime - startTime) + 'ms<br />');

                startTime=new Date();
                slowfizzbuzz();
                endTime=new Date();
                document.writeln('Slow: ' + (endTime - startTime) + 'ms<br />');
            </script>
        </body>
    </html>