内容简介：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 by a string. And each move is represent by a character. The
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 by a string. And each move is represent by a character. The valid robot moves are R (Right), L (Left), U (Up) and D (down). The output should be true or false representing whether the robot makes a circle.
Example 1:
Input: “UD”
Output: true
Example 2:
Input: “LL”
Output: false
return moves.filter({$0 == "U"}).count == moves.filter({$0 == "D"}).count && moves.filter({$0 == "R"}).count == moves.filter({$0 == "L"}).count
（随着网站访问量的激增，服务器配置只得一再升级以维持网站不“404 Not Found”，所以网站的维护费用也在不断上涨……（目前的阿里云服务器ECS+云数据库RDS+域名购买+七牛云的费用是2200元/年），为了能不放弃该网站，所以我又把打赏链接放上来啦～所有打赏金额都会被记账并投入博客维护中，感谢厚爱，多多关照～）
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持 码农网
猜你喜欢:
本站部分资源来源于网络，本站转载出于传递更多信息之目的，版权归原作者或者来源机构所有，如转载稿涉及版权问题，请联系我们。
零售的哲学：7-Eleven便利店创始人自述
[日] 铃木敏文 / 顾晓琳 / 江苏文艺出版社 / 2014-12-1 / 36
全球最大的便利店连锁公司创始人——铃木敏文，结合40多年零售经验，为你讲述击中消费心理的零售哲学。铃木敏文的很多创新，现在已经成为商界常识，本书把那些不可思议的零售创新娓娓道来。关于零售的一切：选址、订货、销售、物流、管理……他一次又一次地在一片反对声中创造出零售界的新纪录。 翻开本书，看铃木敏文如何领导7-11冲破层层阻碍，成为世界第一的零售哲学。一起来看看 《零售的哲学：7-Eleven便利店创始人自述》 这本书的介绍吧!
