"1 - Exercices sur les tableaux"
t := #(3 5 6) copy.
t at:2 put:7. t

t at:2 put: ((t at:2) * 2).
t at:2 put: (t at:2) negated.
t at:3 put: (t at:2).
t at:3 put: ((t at:1) + (t at:3)).

"2 - Barycentre de points"
points := Array new:4.
points at:1 put: address@hidden;
       at:2 put: address@hidden;
       at:3 put: address@hidden;
       at

masses := #(1 2 3 4).
masse := (masses at:1) + (masses at:2) + (masses at:3) + (masses at:4)

"aueiauie"