Name (please type legibly, ideally in block letters): ______________________________________________________________________
1. Write down a code that, given two arrays a[i] and b[i], returns their component-wise difference, i.e., an array c for which c[0]=a[0]-b[0], c[1]=a[1]-b[1], ...
2. Write down a method that, given an array a, returns the number of all positive elements of this array.