CS 61B lab7

  public static void main(String[] args) {

    int N = 3;
    ListNode geomSeries = createGeomSeries(1.0/2, N);
    double sum = listSum(geomSeries);

    System.out.println("for N = " + N + ",
");
    System.out.println("       N  | 1 |^i");
    System.out.println("      sum |---|   = " + sum);
    System.out.println("      i=0 | 2 |
");
  }

直接用的eclipse debug

留个坑 有空整理一下lecture  ENCAPSULATED LISTS 一课的内容。