大约有 11,380 项符合查询结果（耗时：0.0209秒） [XML]
How do I measure time elapsed in Java? [duplicate]
...ar are quite right.
If you are measuring elapsed time, and you want it to be correct, you must use System.nanoTime(). You cannot use System.currentTimeMillis(), unless you don't mind your result being wrong.
The purpose of nanoTime is to measure elapsed time, and the purpose of currentTimeMillis ...
Set every cell in matrix to 0 if that row or column contains a 0
...
Ok, so I'm tired as it's 3AM here, but I have a first try inplace with exactly 2 passes on each number in the matrix, so in O(NxN) and it is linear in the size of the matrix.
I use 1rst column and first row as markers to know where are rows/cols with only 1's...
C# vs C - Big performance difference
I'm finding massive performance differences between similar code in C anc C#.
13 Answers
...
Is Fortran easier to optimize than C for heavy calculations?
From time to time I read that Fortran is or can be faster then C for heavy calculations. Is that really true? I must admit that I hardly know Fortran, but the Fortran code I have seen so far did not show that the language has features that C doesn't have.
...
Websocket API to replace REST API?
I have an application whose primary function works in real time, through websockets or long polling.
10 Answers
...
How to use concerns in Rails 4
...y "concerns" under controllers and models. I have found some explanations about how to use routing concerns, but nothing about controllers or models.
...
What is the difference between NTFS Junction Points and Symbolic Links?
At a high level, the only obvious difference between NTFS Junction Points and Symbolic Links is that Junctions are only able to be directories, while SymLinks are allowed to also target files.
...
How to sign an android apk file
...th directions. I have very little programing experience, so any help would be appreciated.
6 Answers
...
Iterator Loop vs index loop [duplicate]
I'm reviewing my knowledge on C++ and I've stumbled upon iterators. One thing I want to know is what makes them so special and I want to know why this:
...
What algorithm can be used for packing rectangles of different sizes into the smallest rectangle pos
Ive got a bunch of rectangular objects which I need to pack into the smallest space possible (the dimensions of this space should be powers of two).
...