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[Oracle] LeetCode 696 Count Binary Substrings
Given a binary string s, return the number of non-empty substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in these substrings are grouped consecutively. Substrings that occur multiple times are counteTopCoder 12792 BitwiseAnd 题解
Warning: 所有更新在我的博客发布，在原文食用体验更佳！ 题意 原题链接 给 \(m\) 个数 \(\{ori_i\}\)，让你添加 \(n - m\) 个数（设这一共 \(n\) 个数为 \(\{a_i\}\)），使得： \(\forall 1 \le i, j \le n,~a_i \operatorname{bitand} a_j \ne 0\) \(\forall 1 \le i, j, k \le n,~a_i \opEmacs之multi-occur(替代的正则)
1.occur-mode快捷键 M-n: 跳转到下一个匹配行的位置 M-p: 跳转到上一个匹配行的位置 <: 跳转到 *occur* buffer的开始位置 >: 跳转到 *occur* buffer的结束位置 点击匹配行或在匹配行上按回车: 跳转到原buffer中匹配行的位置 g: 刷新 *occur* buffer中的搜索结果. 常用于原buffeoracle获取每隔5分钟的数据趋势
往前一小时每隔 5 分钟 SELECT to_char(trunc(sysdate,'hh24')+(to_char(sysdate,'mi')-mod(to_char(sysdate,'mi'),5))/60/24 - 1/24+(rownum*5)/(24*60),'hh24:mi') AS occur_hour FROM DUALCF587F Duff is Mad
更好的阅读体验 题意 给定 \(n\) 个字符串 \(S_{1...n}\). 定义 \(\text{occur}(t, s)\) 为 字符串 \(t\) 在字符串 \(s\) 中的出现次数. 有 \(q\) 次询问，每次给出 \(l\)，\(r\) 和 \(k\)，输出 \(\sum\limits_{l\le i\le r}\text{occur}(s_i, s_k)\). \(n,k,\sum |s_i|\le 10^5\) 题Isolation Levels and Locking
Concurrency Concurrency can be defined as the ability of multiple processes to access or change shared data at the same time. Pessimistic (悲观)concurrency: The system behaves pessimistically and assumes that a conflict will occur. Readers block writers anLeetCode知识点总结 - 696
LeetCode 696. Count Binary Substrings 考点难度StringEasy 题目 Give a binary string s, return the number of non-empty substrings that have the same number of 0's and 1's, and all the 0's and all the 1's in these substrings are grouped consecu009.hive-hive--lead()上浮、lag()下沉--求同比
hive--lead()上浮、lag()下沉--求同比 select occur_period ,occur_period_year ,occur_period_month ,org_name ,people_num ,people_num_2 -- （今年这个月人数 - 去年这个月人数）/去年这个月人数 ,(people_num-people_num_2)/people_num_2 as people_num_t from ( selecEclipse freemark报错：In a macro declaration，parameters without a default value must all occur before t
报错信息： 解决方法：先把tomcat里面的项目给remove掉，然后点击下面图片中的那个图标，让它暗下来，在重新放项目 具体原因不知道，记录下这个问题把 eclipse真的坑爹啊，百度都百度不到！！！Measures of Center - Mode
The mode is the value in the data set that occurs most frequently. If all of the data values occur only once, or they each occur an equal number of times, we say that there is no mode. If only one value occurs most often, then the data set is said to be554. Brick Wall
package LeetCode_554 /** * 554. Brick Wall * https://leetcode.com/problems/brick-wall/ * * There is a brick wall in front of you. * The wall is rectangular and has several rows of bricks. * The bricks have the same height but different width. * YoLucene BooleanQuery中的Occur.MUST与Occur.Should
https://www.cnblogs.com/weipeng/archive/2012/04/18/2455079.html 1. 多个MUST的组合不必多说，就是交集 2. MUST和SHOULD的组合。是在MUST搜出来的doc里面，根据SHOULD的query进行打分。也就是说，SHOULD的query不会影响最终的HITS，只会提供打分依据。 3. SHOULD[LeetCode] 202. Happy Number
题目内容 https://leetcode-cn.com/problems/happy-number/ 编写一个算法来判断一个数是不是“快乐数”。 一个“快乐数”定义为：对于一个正整数，每一次将该数替换为它每个位置上的数字的平方和，然后重复这个过程直到这个数变为 1，也可能是无限循环但始终变不到 1。如果可以变为 137. Sudoku Solver
Write a program to solve a Sudoku puzzle by filling the empty cells. A sudoku solution must satisfy all of the following rules: Each of the digits 1-9 must occur exactly once in each row. Each of the digits 1-9 must occur exactly once in each column.