You can translate the resulting mask back into a single index by counting the leading zeroes, and then subtracting that from 31. A possible assembly language instruction sequence to do this would be

计算前导零，然后从 31 中减去前导零数量，就可以将产生的掩码转换为索引。

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The data from these sources gives a more accurate picture of what people actually listen to, rather than counting single sales alone.

相比较单纯去统计单曲销量，这些来源的数据更能够准确的显示出人们都在听什么。

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The best single predictor of dyscalculia, by contrast, is abnormal slowness in counting a few dots on a page, a task that most find trivially easy.

而对于计算障碍，一个最合适的预测指标就是在计算一张纸上少数点的个数时所花费异常长的缓慢，而这一任务对于绝大多数人来说是非常简单的。

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At NBC, executives say a network turnaround will take years, and they aren't counting on any single show.

WSJ: The High Stakes of NBC's 'Smash'

Tracking and counting the entirety of social traffic remains difficult, and picking a single number to quantify it all gets a little hairy.

FORBES: Inside Forbes: What's the State of Our Social Union? Here Are Some Stats.