Problem 2: Even Fibonacci numbers
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.
斐波那契数列中的每一项被定义为前两项之和。要求找出该数列中值为不超过 4 百万的偶数的项之和。
我的python代码:
first = 1 last =2 sum = 2 while 1 : last = first + last; first = last - first; if last<4000000 : if last%2==0: sum+=last else: break; print sum
你知道有更好的可以留言啊,大家互相学习啊!
002. 斐波那契数列中的偶数,布布扣,bubuko.com
原文:http://blog.csdn.net/hackingwu/article/details/26492107