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我是一个相对较新的 Java 程序员，现在大部分时间我都在修改这个程序，但我仍然卡住了；我希望你能帮我解决这个问题。
因此该程序应该满足以下要求:
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.
这是我的代码:
//Generates Fibonacci sequence
while (fibNum < 144)
{
int lastValue = (Integer) fibList.get(fibList.size()-1);
int secondToLastValue = (Integer) fibList.get(fibList.size()-2);
fibNum = secondToLastValue + lastValue;
if (fibNum < 144)
{
fibList.add(fibNum);
}
//Picks out the even numbers from limitFibList
for (int i = 0; i < fibList.size(); i++)
{
if ((Integer) fibList.get(i) % 2 == 0)
{
evenNumsFibList.add(fibList.get(i));
}
}
//Sums up the total value of the numbers in the evenNumsFibList
for (int i = 0; i < evenNumsFibList.size(); i++)
{
sum += (Integer) evenNumsFibList.get(i);
}
...这是我得到的输出:
Fibonacci sequence list: [1, 2, 3]
Size of the Fibonacci list: 3
Even Numbers list: [2]
Total sum of even numbers: 2
Fibonacci sequence list: [1, 2, 3, 5]
Size of the Fibonacci list: 4
Even Numbers list: [2, 2]
Total sum of even numbers: 6
Fibonacci sequence list: [1, 2, 3, 5, 8]
Size of the Fibonacci list: 5
Even Numbers list: [2, 2, 2, 8]
Total sum of even numbers: 20
Fibonacci sequence list: [1, 2, 3, 5, 8, 13]
Size of the Fibonacci list: 6
Even Numbers list: [2, 2, 2, 8, 2, 8]
Total sum of even numbers: 44
Fibonacci sequence list: [1, 2, 3, 5, 8, 13, 21]
Size of the Fibonacci list: 7
Even Numbers list: [2, 2, 2, 8, 2, 8, 2, 8]
Total sum of even numbers: 78
Fibonacci sequence list: [1, 2, 3, 5, 8, 13, 21, 34]
Size of the Fibonacci list: 8
Even Numbers list: [2, 2, 2, 8, 2, 8, 2, 8, 2, 8, 34]
Total sum of even numbers: 156
Fibonacci sequence list: [1, 2, 3, 5, 8, 13, 21, 34, 55]
Size of the Fibonacci list: 9
Even Numbers list: [2, 2, 2, 8, 2, 8, 2, 8, 2, 8, 34, 2, 8, 34]
Total sum of even numbers: 278
Fibonacci sequence list: [1, 2, 3, 5, 8, 13, 21, 34, 55, 89]
Size of the Fibonacci list: 10
Even Numbers list: [2, 2, 2, 8, 2, 8, 2, 8, 2, 8, 34, 2, 8, 34, 2, 8, 34]
Total sum of even numbers: 444
Fibonacci sequence list: [1, 2, 3, 5, 8, 13, 21, 34, 55, 89]
Size of the Fibonacci list: 10
Even Numbers list: [2, 2, 2, 8, 2, 8, 2, 8, 2, 8, 34, 2, 8, 34, 2, 8, 34, 2, 8, 34]
Total sum of even numbers: 654
显然我的 while 循环导致了我的问题，但我不知道如何解决它。
非常感谢您的帮助，
哈克