Time a function: Difference between revisions

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{{task}}
Write a program which uses a timer (with the least granularity available on your system) to time how long a function takes to execute.
 
Whenever possible, use methods which measure only the processing time used by the current process; instead of the difference in [[system time]] between start and finish, which could include time used by other processes on the computer.
 
This task is intended as a subtask for [[Measure relative performance of sorting algorithms implementations]].
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