Write code to complete doublePennies () 's base case. Sample output for below program with inputs 1 and 10: Number of pennies after 10 days: 1024 Note: If the submitted code has an infinite loop, the system will stop running the code after a few seconds, and report "Program end never reached." The system doesn't print the test case that caused the reported message.

public class CalculatePennies {

/ / Returns number of pennies if pennies are doubled numDays times

public static long doublePennies (long numPennies, int numDays) {

long totalPennies = 0;

/ * Your solution goes here * /

if (numDays = = 0) {

totalPennies = numPennies;

}

else {

totalPennies = doublePennies ((numPennies * 2), numDays - 1);

}

return totalPennies;

}

/ / Program computes pennies if you have 1 penny today,

/ / 2 pennies after one day, 4 after two days, and so on

public static void main (String [] args) {

long startingPennies = 0;

int userDays = 0;

startingPennies = 1;

userDays = 10;

System. out. println ("Number of pennies after " + userDays + " days: "

+ doublePennies (startingPennies, userDays));

return;

}

}