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Queue的方法isEmpty实现有些问题? #7

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@iamqk

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@iamqk

应该使用如下的方法实现吧?

- (BOOL)isEmpty
{
//    if (self.queueArray.count == 0)
    if (self.countOfQueue == 0)
    {
        return YES;
    }
    return NO;
}


- (NSInteger)countOfQueue
{
//    return self.queueArray.count;
    return self.queueArray.count - self.headIndex;
}

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