写出一个双向的循环链表,弄一个计数器,我定义的是到三的时候,自动删除当前节点,很简单. package Com; import java.util.Scanner; /* * 约瑟夫环问题,有n个人组成的圈,数到3的那个人出列,下个人继续从一开始 */ public class Josephus { public static void main(String[] args) { Scanner s = new Scanner(System.in); int n = Integer.parseI
Given a linked list, return the node where the cycle begins. If there is no cycle, return null. Follow up: Can you solve it without using extra space? 这个求单链表中的环的起始点是之前那个判断单链表中是否有环的延伸,可参见我之前的一篇文章 (http://www.cnblogs.com/grandyang/p/4137187.html). 还是要设
Given a linked list, determine if it has a cycle in it. Follow up: Can you solve it without using extra space? 这道题是快慢指针的经典应用.只需要设两个指针,一个每次走一步的慢指针和一个每次走两步的快指针,如果链表里有环的话,两个指针最终肯定会相遇.实在是太巧妙了,要是我肯定想不出来.代码如下: C++ 解法: class Solution { public: bool hasCycle
Job类 /** * Define the comparator that controls * how the keys are sorted before they * are passed to the {@link Reducer}. * @param cls the raw comparator * @see #setCombinerKeyGroupingComparatorClass(Class) */ publicvoid setSortCompar
