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1) Write a recursive method that takes as a parameter a nonnegative integer and generates the following pattern of stars. If the nonnegative integer is 4, then the pattern generated is:

***

*

***

**

*

*

**

***

****

Also, write a program that prompts the user to enter the number of lines in the pattern and uses the recursive method to generate the pattern. For example, specifying the number of lines to be 4 generates the preceding pattern.

2) Write a recursive method that finds and returns the sum of the elements of an int array. Also, write a program to test your method.

1.
Write a recursive method that takes as a parameter a nonnegative integer and
generates the following pattern of stars. If the nonnegative integer is 4, then
the pattern generated is:
****
***
**
*
*
**
***
****
Also, write a program that prompts the user to enter the number of lines in
the pattern and uses the recursive method to generate the pattern. For
example, specifying the number of lines to be 4 generates the preceding
pattern.
5.
Write a recursive method that finds and returns the sum of the elements of
an int array. Also, write a program to test your method.