Solution of buckets and tank problem

I've seen this problem in 4th grade exersize book: fill the tank with 4 liters of water using 3-liter and 5-liter buckets.
We could employ computer and solve it using brute force approach - by checking all available variants. Here is the calculator.

Solution of buckets and tank problem

First bucket size

Second bucket size

Tank volume

Search depth (number of actions)

Calculate

save Save extension Widget

Search depth limits the outputted solutions to certain number of actions (otherwise you can get many repetitions)