* 时间复杂度: O(n^1.3)~O(n²) 取决于步长序列 空间复杂度: O(1) 稳定: ✗
The astronaut who experienced a medical issue in space last month has identified himself as the sick member of his crew prompting an evacuation from the International Space Station.
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The ISS does have its own defenses, of course. Fabric-y buffers envelope some of the systems, and a bumper called the Whipple Shield helps blunt impact. That shield is only built to stop debris up to about 1 cubic centimeter, though, and the debris tracker is only designed to catch pieces 10 cubic centimeters and larger. In other words, there’s a gap in defenses.
But when the platform announced it would soon require some users to verify their age, Alastair was among those concerned about its implications for their data - and that of their online communities.