Class Node

src/main/java/com/crossoverjie/algorithm/LinkLoop.java:13–25

public class LinkLoop {

    public static class Node{
        private Object data ;
        public Node next ;

        public Node(Object data, Node next) {
            this.data = data;
            this.next = next;
        }

        public Node(Object data) {
            this.data = data ;
        }
    }

    /**
     * 判断链表是否有环