study_slacker_的博客

递归将一个json字符串转化为一个map集合（记录一下这个半成品工具类，暂时还无法分清每个键所对应的值的数据类型，只能是都转化为String或者null）用到的jar包：[fastjson-1.2.2.jar](https://pan.baidu.com/s/1EFiJ5UzcBxD-UvdZIK0cBw)提取码：sohq //工具类package Others;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.

class Solution { public boolean judgeCircle(String moves) { return (moves.replace("U","").length()==moves.replace("D","").length()&&moves.replace("L","").length()==moves.replace("R","").length()); } }