java刷题-3
2022-08-14 本文已影响0人
robertzhai
总结
用一个变量来控制流转
1、https://leetcode.cn/problems/fizz-buzz-multithreaded/submissions/
class FizzBuzz {
private int n;
private volatile int printType ;// 0 3 5 15
public FizzBuzz(int n) {
this.n = n;
printType = 0;
}
// printFizz.run() outputs "fizz".
public void fizz(Runnable printFizz) throws InterruptedException {
for(int i=3;i<=n;i+=3) {
if(i%15 == 0) {
continue;
}
while(printType != 3) {
Thread.yield();
}
printFizz.run();
printType = 0;
}
}
// printBuzz.run() outputs "buzz".
public void buzz(Runnable printBuzz) throws InterruptedException {
for(int i=5;i<=n;i+=5) {
if(i%15 == 0) {
continue;
}
while(printType != 5) {
Thread.yield();
}
printBuzz.run();
printType = 0;
}
}
// printFizzBuzz.run() outputs "fizzbuzz".
public void fizzbuzz(Runnable printFizzBuzz) throws InterruptedException {
for(int i=15;i<=n;i+=15) {
while(printType != 15) {
Thread.yield();
}
printFizzBuzz.run();
printType = 0;
}
}
// printNumber.accept(x) outputs "x", where x is an integer.
public void number(IntConsumer printNumber) throws InterruptedException {
for(int i = 1; i<=n; i++) {
while(printType != 0) {
Thread.yield();
}
if (i%15== 0) {
printType = 15;
} else if (i%3 == 0) {
printType = 3;
} else if (i%5==0) {
printType = 5;
} else {
printNumber.accept(i);
}
}
}
}