leetcode 657. Judge Route Circle

这个题目比较简单，设置x,y两个变量用来标识横坐标与纵坐标即可。

class Solution {public:    bool judgeCircle(string moves) {        int x=0,y=0;        for(int i=0;i<moves.size();i++)        {            if(moves[i]=='U')            {                y++;            }else if(moves[i]=='D')            {                y--;            }else if(moves[i]=='L')            {                x--;            }else if(moves[i]=='R')            {                x++;            }        }        return (x==0&&y==0);    }};