Chapter 8, Problem 8.12PE

(Financial application: compute tax) Rewrite Listing 3.5, ComputeTax.java, using arrays. For each filing status, there are six tax rates. Each rate is applied to a certain amount of taxable income. For example, from the taxable income of $400,000 for a single filer, $8,350 is taxed at 10%, (33,950 − 8,350) at 15%, (82,250 − 33,950) at 25%, (171,550 − 82,550) at 28%, (372,550 − 82,250) at 33%, and (400,000 − 372,950) at 36%. The six rates are the same for all filing statuses, which can be represented in the following array:

double[] rates= {0.10, 0.15 , 0.25, 0.28 , 0.33, 0. 35};

The brackets for each rate for all the filing statuses can be represented in a two-dimensional array as follows:

Suppose the taxable income is $400,000 for single filers. The tax can be computed as follows:

tax = brackets [0][0] * rates[0] +

(brackets [0][1] − brackets [0] [0]) * rates [1] +

(brackets[0] [2] − brackets[0][1]) * rates[2] +

(brackets [0] [3] − brackets [0] [2]) * rates[3] +

(brackets [0] [4 ] − brackets[0] [3]) * rates [4] +

(400000 − brackets[0] [4]) * rates[5] ;