Advanced Diamond

Given an integer N, print a framed diamond where the border is asterisks (*), and the interior displays row numbers counting down from row index to 1.

Input Format

A single integer N.

Output Format

Print 2*N - 1 rows of the framed number diamond.

Constraints:1 <= N <= 9

Concepts Required:

Border frame conditionsInterior dynamic numberingDual-phase reflection

Expected Pattern PreviewASCII Monospace

    *
   *1*
  *212*
 *32123*
*4321234*
 *32123*
  *212*
   *1*
    *

Notice how character spacing and row counts scale systematically based on the input N.

Concrete Examples

Example 1

Input:

Output:

    *
   *1*
  *212*
 *32123*
*4321234*
 *32123*
  *212*
   *1*
    *

Explanation: Enclosed with stars, interior contains palindrome numbers.

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