前言:虽说这是件小事儿,但本宝宝思前想后,还是为它留下一笔,嘿嘿。反正写博客不浪费纸和笔!好久没有开启我的逗比模式了,我亲爱的乖徒弟DBA,DBB,DBAA等,好久不见你们,遥祝幸福快乐+DB。 整个事情其实使这样的,最近的项目中,有一个表,最终是这样的:一共3位,每一位的取值是1和0(额,后来还有2,哈哈哈),1代表已认证,0代表未认证。 当时为什么这么设计呢,是因为会高频率的出现 X
Boboniu likes bit operations. He wants to play a game with you. Boboniu gives you two sequences of non-negative integers 𝑎1,𝑎2,…,𝑎𝑛 and 𝑏1,𝑏2,…,𝑏𝑚. For each 𝑖 (1≤𝑖≤𝑛), you’re asked to cho
题目:学习使用按位与 & 。 There is no nutrition in the blog content. After reading it, you will not only suffer from malnutrition, but also impotence. The blog content is all parallel goods. Those who are wo
题目:学习使用按位或 | There is no nutrition in the blog content. After reading it, you will not only suffer from malnutrition, but also impotence. The blog content is all parallel goods. Those who are worrie