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  1. import Data.List
  2. import Control.Monad
  3.  
  4. yoba n = foldM (\r x -> putStrLn (
  5. 			if odd r then "" else "  " ++ replicate (r `div` 2) '\t' ++ intercalate "\t" (map show x)
  6. 		 ) >> return (r - 1)) n
  7. 	$ take n $ iterate (\row -> zipWith (+) ([0] ++ row) (row ++ [0])) [1]
  8.  
  9. main = yoba 15
Success #stdin #stdout 0s 6228KB
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stdin
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Standard input is empty
stdout
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  							1	1

  						1	3	3	1

  					1	5	10	10	5	1

  				1	7	21	35	35	21	7	1

  			1	9	36	84	126	126	84	36	9	1

  		1	11	55	165	330	462	462	330	165	55	11	1

  	1	13	78	286	715	1287	1716	1716	1287	715	286	78	13	1
https://ideone.com/UXGUOb
language:
Haskell (ghc 8.4.4)
created:
11 years ago
visibility:
secret

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