【leetcode328】Odd Even linked list - 程序媛Sophia
题目:非常简单的单双链表题
思路:用两个指针一起遍历链表,每次遍历两个节点(奇数节点和偶数节点),然后再将偶数链表的头接在奇数链表的尾后。
注意点:思路是很简单,但是一定要注意细节。链表题因为指针较多,有时候容易混淆,多声明几个也没有关系,一定要将指针变换的过程整理清楚。
class Solution(object):def oddEvenList(self, head): if head == None or head.next == None or head.next.next == None:#少于三个节点的,都只需直接返回head return head evenHead = head.next#标记偶节点指针的头 curOdd = head#标记奇节点的当前节点 curEven = evenHead#标记... cur = evenHead.next while cur != None: curOdd.next = cur curOdd = cur cur = cur.next if cur != None:#这里一定要判断哟 curEven.next = cur curEven = cur cur = cur.next curOdd.next = evenHead curEven.next = None#这里一定要记得置空 return head