As the love interest, Alex O'Loughlin joins a growing legion of hunky stars from Australia making it big on American screens.

VOA: standard.2010.04.30

You can actually say big O of 1, big O of 1 being constant time, the same number of steps.

其复杂度为O，表示时间是一个常量，所用的步数是相同的。

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