Geek is very fond of patterns. Once, his teacher gave him a square pattern to solve. He gave Geek an integer n and asked him to build a pattern.
Help Geek to build the pattern.

Example 1:
Input: 4
Output:
4 4 4 4 4 4 4
4 3 3 3 3 3 4
4 3 2 2 2 3 4
4 3 2 1 2 3 4
4 3 2 2 2 3 4
4 3 3 3 3 3 4
4 4 4 4 4 4 4
Your Task:
You don't need to input anything. Complete the function printSquare() which takes an integer n as the input parameter and print the pattern.
Constraints:
1<= N <= 20

见题面

见题面