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Is log(n!) = Θ(n·log(n))?
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Remember that
log(n!) = log(1) + log(2) + ... + log(n-1) + log(n)
You can get the upper bound by
log(1) + log(2) + ... + log(n) <= log(n) + log(n) + ... + log(n)
= n*log(n)
And you can get the lower bound by doin...
pandas DataFrame: replace nan values with average of columns
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google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
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FooInterface的析构函数~FooInterface()必须是virtual的
在第13行，我们得把getArbitraryString定义为纯虚函数。其实getArbitraryString()也不一定得是纯虚函数，这点我们后面会提到.
现在我们用Google Mock来定义Mock类 FooMock.h
#ifndef MO...
Print a list in reverse order with range()?
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Fastest way to flatten / un-flatten nested JSON objects
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How many double numbers are there between 0.0 and 1.0?
...or example, that's the number of distinct doubles between 0.5 included and 1.0 excluded, and exactly that many also lie between 1.0 included and 2.0 excluded, and so forth.
Counting the doubles between 0.0 and 1.0 is harder than doing so between powers of two, because there are many powers of two i...
What is the best way to convert an array to a hash in Ruby
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How to round up the result of integer division?
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