How exactly can you create a function String reverse () that contains the current string and outputs a new string with the complete reverse of it? 

i am very new to processing, i am curious how to make a double array to show only 2 decimal places, right now its showing 12 places.  heres the code

1. void setup()
2. {
3.   printLedger();
4. }
5. void printLedger()
6. {
7.   double [] entry = {10.52, 1900.78, -234.78};
8. for (int i = 0; i < entry.length; i++)
9. {
10.   println(entry[i]);
11. }
12. }