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LeetCode 1223. Dice Roll Simulation
原题链接在这里:https://leetcode.com/problems/dice-roll-simulation/ 题目: A die simulator generates a random number from 1 to 6 for each roll. You introduced a ...
分类:其他好文   时间:2020-02-18 14:53:26    阅读次数:60
1344. Angle Between Hands of a Clock
Given two numbers, hour and minutes. Return the smaller angle (in sexagesimal units) formed between the hour and the minute hand. Example 1: Input: ho ...
分类:其他好文   时间:2020-02-13 09:30:42    阅读次数:57
【2020-02-11】1346. Check If N and Its Double Exist
更多LeetCode解题详解 Easy Given an array arr of integers, check if there exists two integers N and M such that N is the double of M ( i.e. N = 2 * M). More ...
分类:其他好文   时间:2020-02-12 00:59:17    阅读次数:85
1342. Number of Steps to Reduce a Number to Zero
Given a non-negative integer num, return the number of steps to reduce it to zero. If the current number is even, you have to divide it by 2, otherwis ...
分类:其他好文   时间:2020-02-10 10:02:26    阅读次数:76
Laravel kalnoy/nestedset
README This is a Laravel 4-6 package for working with trees in relational databases. Laravel 5.7, 5.8, 6.0 is supported since v5 Laravel 5.5, 5.6 is s ...
分类:其他好文   时间:2020-02-10 09:37:52    阅读次数:81
【leetcode】1342. Number of Steps to Reduce a Number to Zero
题目如下: Given a non-negative integer num, return the number of steps to reduce it to zero. If the current number is even, you have to divide it by 2, ot ...
分类:其他好文   时间:2020-02-09 18:31:58    阅读次数:64
【leetcode】1340. Jump Game V
题目如下: Given an array of integers arr and an integer d. In one step you can jump from index i to index: i + x where: i + x < arr.length and 0 < x <= d. ...
分类:其他好文   时间:2020-02-08 16:04:58    阅读次数:64
【leetcode】1338. Reduce Array Size to The Half
题目如下: Given an array arr. You can choose a set of integers and remove all the occurrences of these integers in the array. Return the minimum size of t ...
分类:其他好文   时间:2020-02-08 15:25:57    阅读次数:69
教你用MySQL导出一个ER图功能
教你用MySQL导出一个ER图功能MySQL数据字典相关的sql查询和navicat的一个导出ER图功能##mysql查看表结构SELECTCOLUMN_NAME‘Field‘,COLUMN_TYPE‘Type‘,IS_NULLABLE‘Null‘,COLUMN_KEY‘Key‘,COLUMN_DEFAULT‘Default&
分类:数据库   时间:2020-02-01 21:19:46    阅读次数:478
mysql insert操作失败后id 在auto_increment下仍会自增的解决办法
在使用golang go sql driver操作mysql时,往tag表插入一条新数据时,如果插入失败,id仍会自增,插入数据失败次数过多时,id就看起来十分混乱。 所以我就在搜索下原因,发现是InnoDB的机制,大致就是说InnoDB的innodb_autoinc_lock_mode模式下,自增 ...
分类:数据库   时间:2020-01-27 15:47:20    阅读次数:209
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