The triangular arrays discussed in this chapter are sometimes called lower-triangular arrays because the values are stored in the lower-left half of the array. How would you modify that kind of array...

The triangular arrays discussed in this chapter are sometimes called lower-triangular arrays because the values are stored in the lower-left half of the array. How would you modify that kind of array to produce an upper-triangular array with the values stored in the upper-right corner?