LeetCode #379: Design Phone Directory
β’ 68 words β’ 1 min
LeetCode #379: Design Phone Directory:
python
class PhoneDirectory:
def __init__(self, maxNumbers: int):
self.available = set(range(maxNumbers))
def get(self) -> int:
if not self.available:
return -1
return self.available.pop()
def check(self, number: int) -> bool:
return number in self.available
def release(self, number: int) -> None:
self.available.add(number)
# Your PhoneDirectory object will be instantiated and called as such:
# obj = PhoneDirectory(maxNumbers)
# param_1 = obj.get()
# param_2 = obj.check(number)
# obj.release(number)