By pcurd
Amy Kimber posted an article today referring to a post from Nick Telford on twitter:
Will The Real Programmers Please Stand Up? http://retwt.me/1NEBw // another example of how diluted our industry really is (link)
This interests me as I often find job interviews to be very generic and after about four in a row you get to know all the answers and appear much cleverer than you perhaps are. I like a problem that makes you think and although FizzBuzz is a trivial problem, I wanted to answer it with a little bit of real world thinking.
To quote Amy, the FizzBuzz problem is “The idea is simple, all you have to do is write a program that prints out the numbers 1 to 100, but for multiples of 3, print Fizz instead of the number and for multiples of 5 print Buzz. If the number is a multiple of both, FizzBuzz should be printed.”
In the real world, specs change. Today it’s 3 and 5 and tomorrow it’s 4 and 9 and we need to add an extra one “Bibble” for 11. I decided to solve the problem with a list of number and word pairs so that changing it would be easy. .Net provides a nice KeyValuePair generic which I used as Int,String.
Originally I had this implemented using a Dictionary but as FizzBuzz must be implemented the correct way around (not BuzzFizz) I needed to change this to a SortedDictionary to ensure order of execution.
Code is as below:
using System;
using System.Collections.Generic;
namespace FizzBuzz
{
class Program
{
static ICollection<KeyValuePair<int, string>> wordlist;
static void Main(string[] args)
{
wordlist = new SortedDictionary<int, string>();
wordlist.Add(new KeyValuePair<int, string>(3, "Fizz"));
wordlist.Add(new KeyValuePair<int, string>(5, "Buzz"));
PrintFizzBuzz(1, 100);
Console.ReadKey();
}
static void PrintFizzBuzz(int start, int finish)
{
for (int i = start; i <= finish; i++)
{
Console.WriteLine(CalculateFizzBuzz(i));
}
}
static object CalculateFizzBuzz(int i)
{
string CalculateFizzBuzz = "";
foreach (KeyValuePair<int, string> word in wordlist)
{
if (i % word.Key == 0)
CalculateFizzBuzz += word.Value;
}
if (CalculateFizzBuzz.Length == 0)
CalculateFizzBuzz = i.ToString();
return CalculateFizzBuzz;
}
}
}
By pcurd
For the last few months I have been rebranding my personal projects and side work to “SW Developments” and today I have launched a website for this venture – http://swdevelopments.co.uk.
I will be developing this website and the venture with more details in the coming months.
SW Developments will consider any project and can produce cost effective, modern Content Management System driven websites, more powerful custom development driven websites or any IT consultancy services for local companies.
