section6/index.html">  6.   Class Design and Hashing </a>
                
                  <a class="dropdown-item" href="../../section/section7/index.html">  7.   Linked Lists </a>
                
                  <a class="dropdown-item" href="../../section/section8/index.html">  8.   Trees </a>
                
            
            
          </div>
          </li>
        
      
        
          <li class="nav-item dropdown"><a class="nav-link dropdown-toggle" id="navbarDropdown" role="button