传送门: http://poj.org/problem?id=3666 Making the Grade Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 9468 Accepted: 4406 Description A straight dirt road connects two fields on FJ's farm, but it changes elevation more than FJ would lik
MySQL 8.0终于支持降序索引了.其实,从语法上,MySQL 4就支持了,但正如官方文档所言,"they are parsed but ignored",实际创建的还是升序索引. 无图无真相,同一个建表语句,看看MySQL 5.7和8.0的区别. create table slowtech.t1(c1 int,c2 int,index idx_c1_c2(c1,c2 desc)); MySQL 5.7 mysql> show create table slowtech.t
数组 升序:Arrays.sort(arr); 降序: 方法一:Arrays.sort(arr,Collections.reverseOrder()); 方法二: package com.yh.sort; import java.util.Arrays; import java.util.Comparator; public class SortOverride { public static void main(String[] args) { // TODO Auto-generated m
List<test> list = new List<test> (); var result = list.OrderByDescending(p => p.we).ToList();//按照we升序排列 var result = list.OrderBy(p => p.we).ToList();//按照we降序排列 public class test { public int we { get; set; } public string ss { get; set;
mySql中,升序为asc,降序为desc.例如: 升序:select * from 表名 order by 表中的字段 asc(mysql中默认是升序排列,可不写) 降序:select * from 表名 order by 表中的字段 desc 若要进行同时一个升序,一个降序,则如下: order by 升序字段 asc,降序字段 desc.
经常会忘记mysql中升序和降序用什么字符来表示,现在就做个笔记:升序排列asc,降序排列desc,举个例子,下面是按时间降序调用栏目的文章,也即是栏目最新文章 [e:loop={"select classid, classname, classpath from `[!db.pre!]enewsclass` where classid=275 order by classid desc limit 9 ",100,24,0}]<ul><li><a hre