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  1. f=lambda n,k:n>1<k and f(n,k-1)+f(n-1,k)or'987654321\n'[~n:]
  2.  
  3. for (n, k) in (5, 1), (5, 2), (5, 3), (3, 3), (2, 4), (2, 3), (1, 4):
  4. 	print (n, k)
  5. 	print f(n, k)
Success #stdin #stdout 0.01s 9024KB
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stdin
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Standard input is empty
stdout
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(5, 1)
54321

(5, 2)
54321
4321
321
21
1

(5, 3)
54321
4321
321
21
1
4321
321
21
1
321
21
1
21
1
1

(3, 3)
321
21
1
21
1
1

(2, 4)
21
1
1
1

(2, 3)
21
1
1

(1, 4)
1
https://ideone.com/8vYOFe
language:
Python (cpython 2.7.16)
created:
7 years ago
visibility:
public

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