Summary For the LinkList

標籤：

Keep in mind that there are two ways to deal with the LinkList very easily.  1. Using the vector to store every item of the list, then we can use the index of the vector to operate the link. That helps a lot. 2. Using three pointers and should understand the theory.(pre, start, then) start is the beginning that we will reverse at the list.  1-2-3-4  pre = 1, start = 2, then = 3把then 插入到pre的後面，pre不動，then始終在放到start的後面.start.next = then.next //把then先拿出來then.next = pre.next //把then在新位置上前後相連pre.next = then. // then的前面then = start.next // then  重新放到start的後面  

Summary For the LinkList