Powers of 2

1. Using the comments as a guide, complete the program so that it prints out the number of powers of 2 that the user requests. Do not use Math.pow to compute the powers of 2! Instead, compute each power from the previous one (how do you get 2ⁿ from 2^n-1?). For example, if the user enters 4, your program should print this:

   Here are the first 4 powers of 2:
   1
   2
   4
   8
   

2. Modify the program so that instead of just printing the powers, you also print which power each is, e.g.:

   Here are the first 4 powers of 2:
   2^0 = 1
   2^1 = 2
   2^2 = 4
   2^3 = 8