How to iterate over each element in a jagged array?

Question

I have one 2 dimensional array, so an array of arrays. The arrays of the arrays DONT have the same lengths. Here an example:

double[][] multi = new double[][         


        

Answer 1

2D arrays are array of arrays... So one can iterate as:

   for (double[] row: multi) {
       for(double value: row) {
       }
   }