01 2016 档案

摘要：1.最简单的方法是使用tac [root ~]$ seq 5 |tac 5 4 3 2 1 2.使用tr和awk。 tr把换行符替换成自定义的分隔符，awk分解替换后的字符串，并逆序输出 [root ~]$ seq 5 | tr '\n' ' ' | awk '{for(i=NF;i>0;i--) 阅读全文

摘要：chinaunix 上看到这么一题：echo 12345678.12|sed ****期望达到效果:12,345,678.12我的解法是先把字符串反转，然后根据‘.’分割，分割完成后对$2部分再进行一次字符串分割，并将结果保存在数组中，遍历数组，每循环三次输出一个‘,’[appadmin@acacb... 阅读全文

摘要：Given a string array words, find the maximum value of length(word[i]) * length(word[j]) where the two words do not share common letters. You may assum... 阅读全文

摘要：The Trips table holds all taxi trips. Each trip has a unique Id, while Client_Id and Driver_Id are both foreign keys to the Users_Id at the Users tabl... 阅读全文

摘要：The Employee table holds all employees. Every employee has an Id, and there is also a column for the department Id.+----+-------+--------+------------... 阅读全文