模拟双向链表动画 模拟数据结构中提到的双向链表的建立过程，其中包含了建立链表，删除节点等动画演示过程，不仅是了解双向链表结构的良好参考也是c语言图形编程的很好参照。-analog two-way linked list animated simulation data structure mentioned in the two-way process of building Chain, these include the establishment of Chain delete