Modify the toString() method in Complex (PROGRAM 3.2.6) so that it prints complex numbers...

Modify the toString() method in Complex (PROGRAM 3.2.6) so that it prints complex numbers in the traditional format. For example, it should print the value 3 − i as 3 − i instead of 3.0 + −1.0i, the value 3 as 3 instead of 3.0 + 0.0i, and the value 3i as 3i instead of 0.0 + 3.0i.

Program 3.2.6 Complex number