Thread: Cumulative array

Hi,

I'm a beginner at java programming and I've got some trouble with creating an array containing cumulative values of the original array.

For example - given { 1, 2.01, 3, 4, 5, 6 }, use code to get an array {1, 3.01, 6.01, 10.01, 15.01, 21.01 }.

The code I have at the moment is:

 public double[] accumulate() {
        double[] accumulate;
        accumulate = new double[observations.length]; 
        accumulate[0] = observations[0];
        for (int i=1; i < observations.length.length; i++) {
           accumulate[i] = observations[i]+ observations[i-1] ;
        }
         return accumulate;
  }

where "observations[]" is the original array we're given.

I don't know where I'm going wrong, but where I'm supposed to get 6.01 I get 5.01 instead. Any help or advice would be appreciated

Ahh that makes a lot more sense now! Thank you so much!!