Print staircase with both base and height equal to n

Consider a staircase of size n=4, as shown below:

      #
    ##
  ###
####

Observe that its base and height are both equal to n, and the image is drawn using # symbols and spaces. The last line is not preceded by any spaces.

Write a program that prints a staircase of size n.

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public static void main(String[] args) {           int n = 10;           if(n < 1 || n > 100) {             throw new IllegalArgumentException("N should be between 0 and 100");         }             for (int i = 1; i <= n; i++) {             System.out.println(Stream.concat(Stream.generate(() -> " ").limit(n-i),                                              Stream.generate(() -> "#").limit(i))                                      .collect(Collectors.joining()));         }       } }