摘要：这道题并不能显示出Python的强大，仅仅作为练手吧 阅读全文

摘要：1. 最近在练习Python，发现它的确有时候比较方便，比如这个，一行代码就解决了问题。 注意到里面这个这个方法。This is extended slice syntax. It works by doing [begin:end:step] - by leaving begin and end 阅读全文

摘要：This problem is a little confusing to me at first. But after I read some articles online, I got to know that it requires bitwise operations. So basica 阅读全文