for(int i=1; i < vector.length; i++)
            for(int j=0; j < vector.length-1; j++) { // if out of order
                if (vector[j] > vector[j+1]) {
                    // exchange elements
                    aux = vector[j];
                    vector[j] = vector[j+1];
                    vector[j+1] = aux;
                }

            }