Programming

Think about the following when you plan your program.

• Break the problem down into smaller parts, and consider writing these as different methods of your class.

• Which parts of your program do you want to be able to change easily? Try to put these in separate methods.

• Which parameters would it be convenient to ask the user to enter?

• How to program this formula?
  I = h$$\left[\vphantom{ \frac{1}{2}(f_1+f_N) + \sum_{i=2}^{N-1}f_i }\right.$$$${\frac{{1}}{{2}}}$$(f₁ + f_N) + $$\sum_{{i=2}}^{{N-1}}$$f_i$$\left.\vphantom{ \frac{1}{2}(f_1+f_N) + \sum_{i=2}^{N-1}f_i }\right]$$

• Summation is well suited to a particular type of Java command, as you have seen in the matrix multiplication exercise (exercise 4.3).