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MySQL5.6到5.7版本升级采用IN-PLACE的升级方式需要具体关注的地方
一.SQL变更GET_LOCK()函数行为MySQL 5.7.5之前GET_LOCK()在执行第二次的额时候会释放前面获得的锁,在此版本以后支持同时获得多个锁,如:mysql> select version();+ +| version() |+ +| 5.6.33-log |+ +1 row in ...
分类:数据库   时间:2018-01-25 18:52:40    阅读次数:248
Uva11134:Fabled Rooks
Problem We would like to place n rooks, 1 ≤ n ≤ 5000, on a n × n board subject to the following restrictions ? The i th rook can only be placed within ...
分类:其他好文   时间:2018-01-25 00:22:41    阅读次数:214
leetcode——Reverse Linked List II 选择链表中部分节点逆序(AC)
Reverse a linked list from position m to n. Do it in-place and in one-pass. For example: Given 1->2->3->4->5->NULL, m = 2 and n = 4, return 1->4->3->2 ...
分类:其他好文   时间:2018-01-20 12:48:31    阅读次数:95
python tkinter学习——布局
目录 一、pack() 二、grid() 三、place() 四、Frame() 目录 一、pack() 二、grid() 三、place() 四、Frame() 正文 布局 一、pack() pack()有以下几个常用属性: side padx pady ipadx ipady fill expa ...
分类:编程语言   时间:2018-01-05 21:58:29    阅读次数:3004
[LeetCode] Coin Path 硬币路径
Given an array A (index starts at 1) consisting of N integers: A1, A2, ..., AN and an integer B. The integer Bdenotes that from any place (suppose the ...
分类:其他好文   时间:2018-01-03 15:47:31    阅读次数:180
Python sort方法
官方文档: sort(*, key=None, reverse=False) This method sorts the list in place, using only < comparisons between items. Exceptions are not suppressed - if ...
分类:编程语言   时间:2018-01-03 00:46:02    阅读次数:256
一条SQL引发系统out of memory PostgreSQL
错误描述(1) Postgres执行的原SQL:select COALESCE(m1.place_id, m2.place_id, m3.place_id) as place_id, concat_ws('``', m1.rich_attributes, m2.rich_attributes, m3.rich_attributes) as rich_attributes from(
分类:数据库   时间:2017-12-29 17:23:16    阅读次数:231
LeetCode.48 - Rotate Image
You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). Note: You have to rotate the image in-place, which ...
分类:其他好文   时间:2017-12-28 21:45:24    阅读次数:187
[LeetCode] 73. Set Matrix Zeroes Java
题目: iven a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra ...
分类:编程语言   时间:2017-12-21 16:01:27    阅读次数:170
HDU5446 Unknown Treasure(组合数+Lucas+中国剩余定理)
On the way to the next secret treasure hiding place, the mathematician discovered a cave unknown to the map. The mathematician entered the cave becaus ...
分类:其他好文   时间:2017-12-16 18:32:53    阅读次数:145
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