01 最大公約數
def gcd(a, b):
if b == 0:
return a
else:
return gcd(b, a % b)
if __name__ == "__main__":
ans = gcd(3, 5)
print(ans)
- 輸出 : 1
輾轉相減法
def gcd(a, b):
if a - b == 0:
return a
else:
tmp1 = abs(a-b)
tmp2 = min(a, b)
a = max(tmp1, tmp2)
b = min(tmp1, tmp2)
return gcd(a, b)
if __name__ == "__main__":
a = 3
b = 5
ans = gcd(a, b)
print(ans)
02 最小公倍數
def gcd(a, b):
if b == 0:
return a
else:
return gcd(b, a % b)
if __name__ == "__main__":
a = 3
b = 5
ans = (a / gcd(a, b)) * b
print(ans)
- 輸出:15.0