Problem
https://projecteuler.net/problem=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:
\[1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ...\]By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.
Answer: 4613732
Solution
module.exports = {
answer : () => {
var fib1 = 1;
var fib2 = 1;
var result = 0;
var summed = 0;
while (result < 4000000) {
if ((result % 2) == 0) {
summed += result;
}
result = fib1 + fib2;
fib2 = fib1;
fib1 = result;
}
return summed;
}
};