-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathEuler006.java
More file actions
executable file
·44 lines (32 loc) · 1.31 KB
/
Copy pathEuler006.java
File metadata and controls
executable file
·44 lines (32 loc) · 1.31 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
import java.util.Date;
/*
Project Euler Problem 6
=======================
The sum of the squares of the first ten natural numbers is,
1^2 + 2^2 + ... + 10^2 = 385
The square of the sum of the first ten natural numbers is,
(1 + 2 + ... + 10)^2 = 55^2 = 3025
Hence the difference between the sum of the squares of the first ten
natural numbers and the square of the sum is 3025 - 385 = 2640.
Find the difference between the sum of the squares of the first one
hundred natural numbers and the square of the sum.
*/
public class Euler006 {
public static void main(String[] args) {
Date start, end;
start = new Date();
int number = 0; // the number is going to incremented to 100
int sum1 = 0; // the sum of the numbers after being squared i.e.: 1^2
// +2^2 ...
int sum2 = 0; // the sum of the numbers squared(1+2+3...)^2
for (number = 0; number <= 100; number++)
sum1 += Math.pow(number, 2);
for (number = 0; number <= 100; number++)
sum2 += number;
sum2 = (int) Math.pow(sum2, 2);
end = new Date();
System.out.println("The difference: " + (sum2 - sum1));
System.out.println("Execution Time: "
+ (end.getTime() - start.getTime()));
}
}