A method of distributing objects, having a random distribution of weights, according to their weights. In the method, the presence of one of the objects is detected, the detected object is grasped by a robot, and the object grasped is weighed by a sensor. The weight measured is associated with the object and stored. The process is repeated for the objects. The weight distribution obtained from the weights measured is used in filling containers with objects so that containers are optimally filled.