How can i measure the execution time of my program locally?
start = System.currentTimeMillis(); // Program Start
end = System.currentTimeMillis(); // Program End
System.out.println("\n\nTime taken to copy in milliseconds: " +(end - start));
In unix, if your output file is called out.txt, you can get the execution time with the command time ./out.txt. Otherwise, you could just use functions from your programming language which measure the time at the start and end, and print out the difference.
If you use a newer compiler then you can use the following snippet
// Timing Code #include <chrono> typedef long long ll; std::chrono::time_point<std::chrono::high_resolution_clock> start, end; start = std::chrono::high_resolution_clock::now(); /* Code goes here */ end = std::chrono::high_resolution_clock::now(); ll elapsed_time = std::chrono::duration_cast<std::chrono::milliseconds>(end-start).count(); cout << "\nElapsed Time: " << elapsed_time << "ms\n";
admin, please, there is no way this would work !!!
time in Unix shows the execution time of following command
so for example if test is executable compiled for example from test.cpp, than one can use
time test > test.out
This question has been asked and answered before. Please refer to this: http://discuss.codechef.com/questions/7129/time-taken-by-codes-to-run?page=1#7135