1116. Print Zero Even Odd

Posted on | Edited on | Views:

LeetCode

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
class ZeroEvenOdd {
    private int n;
    Semaphore zero = new Semaphore(1);
    Semaphore even = new Semaphore(0);
    Semaphore odd = new Semaphore(0);
    
    public ZeroEvenOdd(int n) {
        this.n = n;
    }

    // printNumber.accept(x) outputs "x", where x is an integer.
    public void zero(IntConsumer printNumber) throws InterruptedException {
        for (int i = 1; i<=n; i++) {
            zero.acquire();
            printNumber.accept(0);
            if (i % 2 == 0) {
                even.release();
            } else {
                odd.release();
            }
        }
    }

    public void even(IntConsumer printNumber) throws InterruptedException {
        for (int i = 2; i<=n; i=i+2) {
            even.acquire();
            printNumber.accept(i);
            zero.release();
        }
    }

    public void odd(IntConsumer printNumber) throws InterruptedException {
        for (int i = 1; i<=n; i=i+2) {
            odd.acquire();
            printNumber.accept(i);
            zero.release();
        }
    }
}
0%