text: //
  //  StairCase.h
  //  Algorithms-Objective-C
  //
  //  Created by Nabil Safatli on 2019-11-10.
  //  Copyright © 2019 Nabil. All rights reserved.
  //
  /*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.
      #
     ##
    ###
   ####
   
   Challenge from: https://www.hackerrank.com/challenges/staircase/
   */
  #import <Foundation/Foundation.h>
  
  NS_ASSUME_NONNULL_BEGIN
  
  @interface StairCase : NSObject
  
  + (void) staircase:(NSNumber *)n;
  
  @end
  
  NS_ASSUME_NONNULL_END
  