Leetcode 1115. Print FooBar Alternately

📅2023-07-22🧐95

This problem is quite fun, and this is more related to the real world problems. Sometimes we deal with UI related problem, or multi-thread programs, we could use threading

from threading import Lock

class FooBar:
    def __init__(self, n):
        self.n = n
        self.lock1 = Lock()
        self.lock2 = Lock()
        self.lock1.acquire()

    def foo(self, printFoo: 'Callable[[], None]') -> None:
        for i in range(self.n):
            self.lock2.acquire()
            printFoo()
            self.lock1.release()
                

    def bar(self, printBar: 'Callable[[], None]') -> None:
        for i in range(self.n):
            self.lock1.acquire()
            printBar()
            self.lock2.release()