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issue #10837 Move fib_recursive_term() outside of fib_recursive() for proper doctest coverage and improved code organization. #11301

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issue #10837 Move fib_recursive_term() outside of fib_recursive() for proper doctest coverage and improved code organization. #11301

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issue #10837 Move fib_recursive_term() outside of fib_recursive() for…
MannCode Feb 25, 2024
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[pre-commit.ci] auto fixes from pre-commit.com hooks
pre-commit-ci[bot] Feb 25, 2024
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45 changes: 23 additions & 22 deletions maths/fibonacci.py
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Original file line number Diff line number Diff line change
Expand Up @@ -83,6 +83,29 @@ def fib_iterative(n: int) -> list[int]:
return fib


def fib_recursive_term(i: int) -> int:
"""
Calculates the i-th (0-indexed) Fibonacci number using recursion
>>> fib_recursive_term(0)
0
>>> fib_recursive_term(1)
1
>>> fib_recursive_term(5)
5
>>> fib_recursive_term(10)
55
>>> fib_recursive_term(-1)
Traceback (most recent call last):
...
Exception: n is negative
"""
Comment on lines +86 to +101
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Can we:

  1. Removed the large block of empty lines in the middle of the fib_recursive function.
  2. Ensured the docstring for the fib_recursive function is correctly formatted and includes the expected outputs for the doctests.

if i < 0:
raise ValueError("n is negative")
if i < 2:
return i
return fib_recursive_term(i - 1) + fib_recursive_term(i - 2)


def fib_recursive(n: int) -> list[int]:
"""
Calculates the first n (0-indexed) Fibonacci numbers using recursion
Expand All @@ -100,28 +123,6 @@ def fib_recursive(n: int) -> list[int]:
ValueError: n is negative
"""

def fib_recursive_term(i: int) -> int:
"""
Calculates the i-th (0-indexed) Fibonacci number using recursion
>>> fib_recursive_term(0)
0
>>> fib_recursive_term(1)
1
>>> fib_recursive_term(5)
5
>>> fib_recursive_term(10)
55
>>> fib_recursive_term(-1)
Traceback (most recent call last):
...
Exception: n is negative
"""
if i < 0:
raise ValueError("n is negative")
if i < 2:
return i
return fib_recursive_term(i - 1) + fib_recursive_term(i - 2)

if n < 0:
raise ValueError("n is negative")
return [fib_recursive_term(i) for i in range(n + 1)]
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