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FizzBuzz - 3 ways
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using System; | |
using System.Collections; | |
using System.Collections.Generic; | |
using System.Linq; | |
namespace FizzBuzz | |
{ | |
class Program | |
{ | |
static void Main(string[] args) | |
{ | |
/* | |
* Write a program that prints the numbers from 1 to 100. | |
* But for multiples of three print "Fizz" instead of the number | |
* and for the multiples of five print "Buzz". | |
* For numbers which are multiples of both three and five print "FizzBuzz". | |
*/ | |
// This is the "classic" solution to the FizzBuzz problem. | |
for (int i = 1; i <= 100; i++) | |
{ | |
if (i % 3 == 0 && i % 5 == 0) | |
{ | |
Console.WriteLine("FizzBuzz"); | |
} | |
else if (i % 3 == 0) | |
{ | |
Console.WriteLine("Fizz"); | |
} | |
else if (i % 5 == 0) | |
{ | |
Console.WriteLine("Buzz"); | |
} | |
else | |
{ | |
Console.WriteLine(i.ToString()); | |
} | |
} | |
// Wait for the user to hit "Enter" after displaying the list above. | |
Console.ReadLine(); | |
// This is a "contemporary" solution to the FizzBuzz problem using LINQ. | |
Enumerable.Range(1, 100).ToList().ForEach(n => Console.WriteLine((n % 3 == 0) ? (n % 5 == 0) ? "FizzBuzz" : "Fizz" : (n % 5 == 0) ? "Buzz" : n.ToString())); | |
// Wait for the user to hit "Enter" after displaying the list above. | |
Console.ReadLine(); | |
// Extensible FizzBuzz! | |
Dictionary<Func<int, bool>, Func<int, string>> rules = new Dictionary<Func<int, bool>, Func<int, string>>(); | |
rules.Add(x => x % 3 == 0, x => "fizz"); | |
rules.Add(x => x % 5 == 0, x => "buzz"); | |
rules.Add(x => x % 5 != 0 && x % 3 != 0, x => x.ToString()); | |
rules.Add(x => true, x => "\n"); | |
var output = from n in Enumerable.Range(1, 100) | |
from f in rules | |
where f.Key(n) | |
select f.Value(n); | |
output.ToList().ForEach(x => Console.Write(x)); | |
// Wait for the user to hit "Enter" after displaying the list above. | |
Console.ReadLine(); | |
// Exit from the application. | |
Environment.Exit(0); | |
} | |
} | |
} |
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