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Use this tag when the code is a solution to a programming challenge. Always include a sufficient description of the problem to be solved - while a link to the challenge is welcome, the review request needs to be complete when the challenge site is unavailable.
11
votes
5
answers
2k
views
Project Euler #2 in Java
Project Euler #2:
Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be:
1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... … 000;
public static void main(String[] args) {
long time = System.nanoTime();
double max = MAX_NUM * SQRT_5;
long sum = 0;
for (int i = 3, result = (int) Math.round(2 …
9
votes
4
answers
938
views
Project Euler #2 in Python
Here is my Python code for Project Euler #2:
Each new term in the Fibonacci sequence is generated by adding the
previous two terms. … By starting with 1 and 2, the first 10 terms will
be:
1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... …
4
votes
0
answers
119
views
Project Euler #2 in Go
I just learned Go (yesterday in fact) and today I made this solution to Project Euler #2. The problem is to sum the even Fibonacci numbers. … matrix calculation is raising a matrix to the power of 4, which I did using this Go matrix library which I believe uses BLAS under the hood.
/* p2.go
* by hacatu
*
* This program solves Project Euler …
5
votes
2
answers
204
views
Project Euler Attack #2
This is my implementation of Project Euler #2 in C#. It takes 0 milliseconds to run, and I believe it is correct - I have seen nothing to indicate otherwise! … static void GetFibos(ref List<int> nums, int maxVal)
{
nums.Add(1);
int lastNum = 2;
while (lastNum <= maxVal)
{
nums.Add(lastNum);
lastNum = nums[nums.Count - 2] + nums …
4
votes
3
answers
217
views
Project Euler #2 in F#
Project Euler Problem 2 asks for the sum of all even Fibonacci numbers below 4 million.
My first attempt at this problem using functional programming with F#. … open System
let rec fib n = match n with
| 0 | 1 | 2 -> n
| _ -> fib (n - 1) + fib (n - 2)
let rec nOfFibTermsUpUntil x y = if fib (y + 1) < x then nOfFibTermsUpUntil …
4
votes
3
answers
811
views
Project Euler 2 - Fibonacci sequence
I lately spend a lot of time at Project Euler programming challenges. … By starting with 1 and 2, the first 10 terms will
be:
1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... …
3
votes
1
answer
234
views
Generators in Javascript; Project Euler #2
I'm trying to learn javascript using project euler and I decided to try to force myself to learn about generators in javascript using problem number 2 which asks us to: Find the sum of the even-valued … terms in the fibonacci (f(n)) sequence such that f(n) < 4M , beginning with n=1 is 1, n=2 is 2, n=3 is 3 and so on
My code below presently works but I'm hoping to get some input as I began learning javascript …
3
votes
3
answers
682
views
Project Euler problem 2
This is a question about Project Euler number 2, a relatively easy one. The question is:
Each new term in the Fibonacci sequence is generated by adding the
previous two terms. … By starting with 1 and 2, the first 10 terms will
be:
1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... …
21
votes
4
answers
3k
views
Project Euler #2 (Even Fibonacci numbers) in Swift
I figured working through Project Euler problems in Swift would be a good way to learn any tips or tricks. For example, tuples are something I'm not used to using, but they proved useful here. … By starting with 1 and 2, the first 10 terms will
be:
1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... …
6
votes
2
answers
218
views
Project Euler #2 with a fibSequence and result
I was hoping you could give me a feedback on the solution I have come up with for the second challenge of Project Euler, and maybe explain me why many of the other solutions I have come across were wrapped … By starting with 1 and 2, the first 10 terms will
be:
1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... …
7
votes
2
answers
2k
views
Project Euler #2 Efficiency
By starting with 1 and 2, the first 10 terms will be:
1,2,3,5,8,13,21,34,55,89,... … fib2 = new BigInteger("1");
BigInteger sum = new BigInteger("0");
BigInteger fib = new BigInteger("0");
while (input.compareTo(fib)>0) {
if (fib.doubleValue() % 2 …
2
votes
3
answers
859
views
Maintaining the Single Responsibility Principle with Project Euler #2
This is my solution to Project Euler problem 2:
By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms. … (self,limit_value):
sequence = 2
sum = 0
while True:
result = self.F(sequence)
if result > limit_value …
1
vote
1
answer
304
views
Euler Project Problem 2 JavaScript
Just solved Euler Project Problem 2 using JavaScript and I would like to know how I could improve my code. I do think it looks good, but you never know. … By starting with 1 and 2, the first 10 terms will
be:
1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... …
9
votes
3
answers
2k
views
Project Euler #2 (Fibonacci Sequence)
By starting with 1 and 2, the first 10 terms will be: 1, 2, 3, 5, 8,
13, 21, 34, 55, 89. …
2
votes
1
answer
222
views
Project Euler #2: sum of even Fibonacci numbers, using generators
I am currently working on Project Euler problem #2 which requires you to print the sum of all even fibonacci numbers below 4 million. … second_last_n = last_n
last_n = current_n
yield current_n
def filter_even(nums): # yields all numbers in nums (a generator) which are even
for n in nums:
if (n % 2 …