Program to print solid and hollow rhombus patterns

For any given number n, print Hollow and solid Squares and Rhombus made with stars(*). 
Examples: 
 

Input : n = 4
Output : 
Solid Rhombus:
 ****
 ****
 ****
****

Hollow Rhombus:
 ****
 * *
 * *
****

1. Solid Rhombus : Making Solid Rhombus is a bit similar to making solid square rather than the concept that for each ith row we have n-i blank spaces before stars as: 
- - - **** 
- - **** 
- **** 
**** 
2. Hollow Rhombus : Formation of Hollow Rhombus uses the idea behind formation of hollow square and solid rhombus. A hollow square with n-i blank spaces before stars in each ith rows result in formation of hollow rhombus. 
 

Solid Rhombus:
 *****
 *****
 *****
 *****
*****

Hollow Rhombus:
 *****
 * *
 * *
 * *
*****

Time Complexity: O(r²), where r represents the given number of rows.
Auxiliary Space: O(1), no extra space is required, so it is a constant.

Approach:

solidRhombus function:

• Initialize variables i and j.
• Loop from i = 1 to n:
• Loop from j = 1 to n - i and print spaces.
• Loop from j = 1 to n and print asterisks.
  • Print a new line.
• End of function.
  

hollowRhombus function:

• Initialize variables i and j.
• Loop from i = 1 to n:
• Loop from j = 1 to n - i and print spaces.
• Loop from j = 1 to n:
• If i = 1 or i = n or j = 1 or j = n, print an asterisk.
• Else, print a space.
  • Print a new line.
• End of function.

Solid Rhombus:
 *****
 *****
 *****
 *****
*****
Hollow Rhombus:
 *****
 * *
 * *
 * *
*****

The time complexity of both functions is O(n^2), because there are two nested loops that iterate over all the rows and columns of the rhombus.
The space complexity is O(1), because only a constant amount of memory is used regardless of the size of the rhombus.