一个数组，其中的项是另一个数组中连续项（相邻）的差异

Question

我目前有：

    public double[] differences()
    {
     diffs = new doublae[sequence.length-1];
     for (int = 0; i<sequence.length; ++i){
     double diff = sequence[i+1] - sequence[i];
     diffs[i] = diff;
    }
    return diffs;
    }

但是，当我运行测试程序来检查它时，这不起作用。

Answer 1

您的范围应该不同 - i不应该通过sequence.length - 2，以使i+1成为有效的索引。

double[] diffs = new double[sequence.length-1];
for (int = 0; i < sequence.length - 1; i++) { // changed the condition
 double diff = sequence[i+1] - sequence[i];
 diffs[i] = diff;
}