What's the General Plan for the Empirical Analysis of Algorithm Time Efficiency? Please put the following steps in order:

$1$

:: Prepare a program implementing the algorithm $($or algorithms$)$ for the experimentation.

Decide on characteristics of the input sample $($its range, size, and so on$).$

$3$

:: Decide on the efficiency metric $M$ to be measured and the measurement unit $($an operation count vs$.$ a time unit$).$

$4,$: Run observed.