Kata

Python:

Create a function running_average() that returns a callable function object. Update the series with each given value and calculate the current average.

r_avg = running_average()
r_avg(10) = 10.0
r_avg(11) = 10.5
r_avg(12) = 11

All input values are valid. Round to two decimal places.

This Kata is based on a example from Fluent Python book.

Javascript // Lua // C++:

Create a function runningAverage() that returns a callable function object. Update the series with each given value and calculate the current average.

rAvg = runningAverage();
rAvg(10) = 10.0;
rAvg(11) = 10.5;
rAvg(12) = 11;