{

                    state = 4;

                }

                break;

            }

            case 2:{ //向左下

                j += 1;

                k -= 1;

                pOutput[i] = pInput[j][k];

                if (k == 0 || j == n - 1)

                {

                    if (j == n - 1)

                    {

                        state = 1;

                    }

                    else

                    {

                        state = 3;

                    }

                }

                else

                {

                    state = 2;

                }

                break;

            }

            case 3:{ //向下