demand
When you need to quantitatively evaluate the execution efficiency of the code, you need to know the running time of the program.
achieve
In matlab, it can be easily achieved with tic and toc commands. Matlab automatically starts timing when the program encounters tic, and automatically calculates the time between this time and the latest tic when it runs to toc.
Examples
%test脚本。通过tic，toc命令直接输出程序运行时间。
tic
pause(1)
t1=toc
pause(1)
t2=toc
Results of the
>> test
时间已过 1.000123 秒。
时间已过 2.000327 秒。
%test脚本。若想将用运行时间记录下来，则这样使用toc
tic
pause(1)
t1=toc
pause(1)
t2=toc
operation result
>> test
t1 =
1.0001
t2 =
2.0004
