public class test {

public static void main(String[] args){

System.out.println(quickexpo(3, 2));
}

static public int quickexpo(int x, int y){
if (y == 1)
return x;
if (y % 2 == 0)
return quickexpo(x*x, y/2);
else
return (x * quickexpo(x*x, y/2));
}

}

bon c moche mais de toute facon ca sert a rien ...

contente Noreil ?