GPS receivers are commonly used by individuals to determine their geographic location while hiking and to obtain driving directions while traveling.

How many times is the body of the loop below executed?

``` int counter = 1; while (counter > 20) { // body of loop counter = counter + 1; } ``` a) 19 b) 20 c) 21 d) 0

How many stars are displayed in the following code if n is 10? How many if n is 20? Use the Big O notation to estimate the time complexity.