H2O Problem | tech::interview



H2O Problem | tech::interview

实现两个函数: H() and O(), 这两个函数会被多线程调用。如果满足当前2个线程调用H(),和1个线程调用O()，让以上3个线程返回，产生一个水分子(可能是HHO,HOH,OHH)。调用H()的当前线程不能大于2，调用O()的当前线程不能大于1。

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