screen.show(t);
screen.show("moyenne des elements : " + t.moyenne());
screen.show("element min : " + t.min());
screen.show("element max : " + t.max());
screen.show("decalage circulaire a droite : ");
t.rightShift();
screen.show(t);
screen.show("contenu trie : ");
t.tri();
screen.show(t);
}