Method duration

examples/job-shop.cpp:114–116

Return duration of step \a j in job \a i

    }
    /// Return duration of step \a j in job \a i
    int duration(int i, int j) const {
      return data[2 + i*machines()*2 + j*2 + 1];
    }
  protected:
    /// Find instance by name \a s
    static const int* find(const char* s) {