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  1. def sum1(n):
  2.   if n == 0:
  3.     return 0
  4.   return n + sum1(n - 1)
  5.  
  6. def sum2(n, s):
  7.   if n == 0:
  8.     return s;
  9.   return sum2(n - 1, s + n)
  10.  
  11. print(sum1(10))
  12. print(sum1(100))
  13. print(sum2(10, 0))
  14. print(sum2(100, 0))
  15.  
Success #stdin #stdout 0.03s 9060KB
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55
5050
55
5050
https://ideone.com/mJmWy7
language:
Python 3 (python  3.9.5)
created:
1 year ago
visibility:
secret

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