Daisy花园

/*The Hamming distance between two integers is the number of positions at which the corresponding bits are different.Given two integers x and y, calculate the Hamming distance.*/题目的意思是：找到x和y的二进制位中，不相同的

题目： Initially, there is a Robot at position (0, 0). Given a sequence of its moves, judge if this robot makes a circle, which means it moves back to the original place.The move sequence is represented

//定义节点 function ListNode(val) { this.val = val; this.next = null; }//定义链表 //链表中有头结点和一些方法 function LinkedList() { this.head = new ListNode('head'); this.find = find; this.insert = in