C# Implementation of Problem 6
View source code here on GitHub!
1/*
2Project Euler Problem 6
3
4This turned out to be really easy
5
6Problem:
7
8The sum of the squares of the first ten natural numbers is,
91**2 + 2**2 + ... + 10**2 = 385
10
11The square of the sum of the first ten natural numbers is,
12(1 + 2 + ... + 10)**2 = 55**2 = 3025
13
14Hence the difference between the sum of the squares of the first ten natural
15numbers and the square of the sum is 3025 − 385 = 2640.
16
17Find the difference between the sum of the squares of the first one hundred
18natural numbers and the square of the sum.
19*/
20using System;
21
22namespace Euler
23{
24 public class p0006 : IEuler
25 {
26 public object Answer()
27 {
28 int sum_of_squares = 0,
29 sum = 0;
30 for (int i = 1; i < 101; i++)
31 {
32 sum += i;
33 sum_of_squares += i * i;
34 }
35
36 int square_of_sum = sum * sum;
37 return square_of_sum - sum_of_squares;
38 }
39 }
40}