So each time through the loop, I'm doing three steps. Three basic operations.

因此每次运行这个循环，我做了三次基本运算。

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Or another way of saying it is, we're going to use as the basic steps, those operations that run in constant time, so arithmetic operations.

我们用可以在恒定时间内完成的操作,算法，比较,内存读取。

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