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#3 Longest substring without repeating characters
Sliding window Hashset Loop through every element inside the string. If the current char is not inside the hashset, push the char into the hashset and ...
分类:其他好文   时间:2018-11-10 15:04:19    阅读次数:189
LightOJ 1224 - DNA Prefix - [字典树上DFS]
题目链接:https://cn.vjudge.net/problem/LightOJ-1224 Given a set of $n$ DNA samples, where each sample is a string containing characters from {A, C, G, T}, ...
分类:其他好文   时间:2018-11-09 22:56:18    阅读次数:288
CentOS7 cannot find a valid baseurl for repo base
找到文件夹: 然后找ifcfg 开头的文件,挨个打开 里面有下面那些代码前三行的就是,添加后面DNS两行,保持并退出,然后继续执行两个ifdown and ifup 命令,然后ping www.baodu.com正常的话就没问题可以更新yum了。 重启网络 超简单将Centos的yum源更换为国内的 ...
分类:Web程序   时间:2018-11-07 11:40:20    阅读次数:264
294. Flip Game II
You are playing the following Flip Game with your friend: Given a string that contains only these two characters: + and -, you and your friend take tu... ...
分类:其他好文   时间:2018-11-06 13:39:27    阅读次数:153
306.Additive Number
Additive number is a string whose digits can form additive sequence. A valid additive sequence should contain at least three numbers. Except for the f ...
分类:其他好文   时间:2018-11-05 16:18:38    阅读次数:112
阿里云云服务器硬盘分区及挂载
阿里云云服务器硬盘分区及挂载 云服务器环境:CentOS 6.5 64位 硬盘分区及挂载操作步骤: 1. 查看未挂载的硬盘(名称为/dev/xvdb) # fdisk -l Disk /dev/xvdb doesn't contain a valid partition table 2. 创建分区 ...
分类:其他好文   时间:2018-11-05 15:14:01    阅读次数:168
#Leetcode# 58. Length of Last Word
https://leetcode.com/problems/length-of-last-word/description/ Given a string s consists of upper/lower-case alphabets and empty space characters ' ', ...
分类:其他好文   时间:2018-11-05 13:37:07    阅读次数:153
django的form 登录组件
1. 了解form 组件的原理 1.建立好form组件 class>>> 2.了解需要先is_valid() 判断是否可以取值 成功 form.cleaned_data 查看成功认证的字典 失败 form.errors 查看失败的键值对 3.自定义 钩子 4.在def clean 比较,通过 1 < ...
分类:其他好文   时间:2018-11-04 23:02:16    阅读次数:198
#Leetcode# 20.Valid Parentheses
https://leetcode.com/problems/valid-parentheses/description/ Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine ...
分类:其他好文   时间:2018-11-04 12:50:40    阅读次数:140
20/32/22/856/301/921 Parentheses 括号匹配或者生成题
20. https://leetcode.com/problems/valid-parentheses/description/ 32. https://leetcode.com/problems/longest-valid-parentheses/description/ 22. https:// ...
分类:其他好文   时间:2018-11-04 11:10:48    阅读次数:134
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