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P1596 [USACO10OCT]湖计数Lake Counting
题目描述 Due to recent rains, water has pooled in various places in Farmer John's field, which is represented by a rectangle of N x M (1 <= N <= 100; 1 <= ...
分类:其他好文   时间:2019-11-08 16:30:54    阅读次数:109
thymeleaf种处理select,radio和文字回显的问题
select根据后台集合显示下列列表 <select class="form-control" name="parentId" > <option ></option> <option th:each="a : ${menus}" th:text="${a.name}" th:value="${a. ...
分类:其他好文   时间:2019-11-07 19:40:55    阅读次数:203
节流与防抖
节流与防抖 节流和防抖,都是优化高频率执行操作的有效手段。 防抖函数 debounce 功能:连续的事件,只在最后一次触发时执行操作 应用场景:最常见的就是输入框验证,如:用户注册时候的手机号码验证或邮箱验证。只有等用户输入完毕后,才检查格式是否正确;搜索框sug请求 防抖函数的实现 节流函数 th ...
分类:其他好文   时间:2019-11-07 13:08:35    阅读次数:93
SQL-W3School-高级:SQL LEFT JOIN 关键字
1、 SQL LEFT JOIN 关键字 LEFT JOIN 关键字会从左表 (table_name1) 那里返回所有的行,即使在右表 (table_name2) 中没有匹配的行。 LEFT JOIN 关键字语法 SELECT column_name(s) FROM table_name1 LEFT ...
分类:数据库   时间:2019-11-06 16:45:34    阅读次数:85
Codeforces Round #598 (Div. 3) E. Yet Another Division Into Teams dp
There are nn students at your university. The programming skill of the ii-th student is aiai. As a coach, you want to divide them into teams to prepar ...
分类:其他好文   时间:2019-11-06 12:54:44    阅读次数:85
table添加水平滚动条
<html> <head> <title>table新增水平滚动条</title> <style type="text/css"> .tableWrap { overflow: auto; } table{ width: 100% } table th{ white-space: nowrap; }... ...
分类:其他好文   时间:2019-11-06 11:41:55    阅读次数:77
The 2019 China Collegiate Programming Contest Harbin Site K. Keeping Rabbits
链接: https://codeforces.com/gym/102394/problem/K 题意: DreamGrid is the keeper of n rabbits. Initially, the i th (1≤i≤n) rabbit has a weight of wi. Every ...
分类:其他好文   时间:2019-11-05 13:26:23    阅读次数:140
HDU 1028 Ignatius and the Princess III (动态规划)
题目链接: "HDU 1028" Problem Description "Well, it seems the first problem is too easy. I will let you know how foolish you are later." feng5166 says. "Th ...
分类:其他好文   时间:2019-11-04 22:01:06    阅读次数:99
LeetCode 1087. Brace Expansion
原题链接在这里:https://leetcode.com/problems/brace-expansion/ 题目: A string S represents a list of words. Each letter in the word has 1 or more options. If th ...
分类:其他好文   时间:2019-11-04 13:57:26    阅读次数:107
解决:The current .NET SDK does not support targeting .NET Core 3.0. Either target .NET Core 1.1 or lower
严重性 代码 说明 项目 文件 行 禁止显示状态错误 The current .NET SDK does not support targeting .NET Core 3.0. Either target .NET Core 1.1 or lower, or use a version of th ...
分类:Web程序   时间:2019-11-04 13:45:58    阅读次数:131
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