Kata

Task:

You have to write a function pattern which returns the following Pattern(See Examples) upto (2n-1) rows, where n is parameter.

• Note:Returning the pattern is not the same as Printing the pattern.

Parameters:

pattern(        n        );
                ^                     
                |                     
         Term upto which   
       Basic Pattern(this)     
            should be         
             created            
                              
                            

Rules/Note:

• If n < 1 then it should return "" i.e. empty string.
• The length of each line is same, and is equal to the length of longest line in the pattern i.e (2n-1).
• Range of Parameters (for the sake of CW Compiler) :
  • n ∈ (-∞,100]

Examples:

• pattern(5):

    1       1
     2     2 
      3   3  
       4 4   
        5    
       4 4   
      3   3  
     2     2 
    1       1
   
    
  

• pattern(10):

    1                 1
     2               2 
      3             3  
       4           4   
        5         5    
         6       6     
          7     7      
           8   8       
            9 9        
             0         
            9 9        
           8   8       
          7     7      
         6       6     
        5         5    
       4           4   
      3             3  
     2               2 
    1                 1
  

• pattern(15):

    1                           1
     2                         2 
      3                       3  
       4                     4   
        5                   5    
         6                 6     
          7               7      
           8             8       
            9           9        
             0         0         
              1       1          
               2     2           
                3   3            
                 4 4             
                  5              
                 4 4             
                3   3            
               2     2           
              1       1          
             0         0         
            9           9        
           8             8       
          7               7      
         6                 6     
        5                   5    
       4                     4   
      3                       3  
     2                         2 
    1                           1
  

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