数据结构中有关单链表操作的源码-data structure of the single-source operating Chain

用尾插法建立单链表，可以事先不必指定要插入的元素的个数，比较灵活，注意输入数据时以－1结束-tailings interpolation creation of a single-chain and can not designated prior to the insertion of items, a more flexible, pay attention to the input data to the end-1