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。
商业模式新生代
亚历山大•奥斯特瓦德 (Alexander Osterwalder)、伊夫•皮尼厄 (Yves Pigneur) / 王帅、毛心宇、严威 / 机械工业出版社 / 2011-8-15 / 88.00元
中文官网:http://www.bizmodel.org 内容简介:当你愉快的看完第一章:商业模式画布,赫然发现这些构成要素全 都交织成一幅清晰的图像在脑海中呈现,它们如何互相影响、如何交互作用全都历历在目。利用商业模式画布分析瑞士银行、Google、Lego、Wii 、Apple等跨国企业,归纳出三种不同的产业 模式,也涵括新近的热门现象免费效应及长尾理论等。在这些有趣的例子中,我们不仅更......一起来看看 《商业模式新生代》 这本书的介绍吧!