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Add typehints and default argument for project_euler/problem_31 #2951

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Add typehints and default argument for project_euler/problem_31 #2951

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16 changes: 8 additions & 8 deletions project_euler/problem_31/sol1.py
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Original file line number Diff line number Diff line change
Expand Up @@ -16,35 +16,35 @@ def one_pence():
return 1


def two_pence(x):
def two_pence(x: int) -> int:
return 0 if x < 0 else two_pence(x - 2) + one_pence()


def five_pence(x):
def five_pence(x: int) -> int:
return 0 if x < 0 else five_pence(x - 5) + two_pence(x)


def ten_pence(x):
def ten_pence(x: int) -> int:
return 0 if x < 0 else ten_pence(x - 10) + five_pence(x)


def twenty_pence(x):
def twenty_pence(x: int) -> int:
return 0 if x < 0 else twenty_pence(x - 20) + ten_pence(x)


def fifty_pence(x):
def fifty_pence(x: int) -> int:
return 0 if x < 0 else fifty_pence(x - 50) + twenty_pence(x)


def one_pound(x):
def one_pound(x: int) -> int:
return 0 if x < 0 else one_pound(x - 100) + fifty_pence(x)


def two_pound(x):
def two_pound(x: int) -> int:
return 0 if x < 0 else two_pound(x - 200) + one_pound(x)


def solution(n):
def solution(n: int) -> int:
"""Returns the number of different ways can n pence be made using any number of
coins?

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