Would you please help answer the following question. Thank you

Question:

Create a Java program named diamond.java using the following instructions. The program should display a diamond shape out of asterisks based on an input value provided by the user.

1) Prompt the user to enter an integer.

2) Write validation logic to reprompt the user if the number is less than 1. This will require a loop.

3) In the comments at the end of the code, determine a growth function with all terms.

4) Then describe the O() of the code that draws the diamond.