[理工] 102 清大资应 计概+数学

楼主: otomoyox (想)   2014-02-12 18:51:24
Part I
2.
If it takes one microsecond to perform a context switch
and processes use only half of their allotted 10 millisecond time slices,
what percent of a CPUs time is spent performing context switches
rather than executing processes?
请问他指的是(c.s time)/(exe time) = (10^-6) / (10 * 10^-3 * 1/2)呢
还是(c.s time)/(c.s time + exe time) = (10^-6) / (10^-6 + 10 * 10^-3 * 1/2) ??
3.
At most, how many entries in a list of 5000 names will be interrogated
when using the binary search algorithm?
请问需要考虑entries 被 insert 成 skewed的情况吗?

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