摘要：when we write a program, cpu and memory usages are very important to indicate the stability of the program. Once the cpu usage reached 90%, there are ... 阅读全文
linux kernel with param
2014-11-08 22:12 by achuan_hu, 251 阅读, 0 推荐, 收藏, 编辑
摘要：Linux kernel support pass param to kernel, this params can be assigned at load time by insmod or modprobe. or later read from /etc/modprobe.conf file.... 阅读全文
The-ith-Element
2014-10-02 16:55 by achuan_hu, 233 阅读, 0 推荐, 收藏, 编辑
摘要：Brief： the-ith-element，given a array A with n element , return the i-th element of A. A(n,i)this problem can be solved using quick-sort idear, every t... 阅读全文
Quick-sort
2014-10-01 00:16 by achuan_hu, 144 阅读, 0 推荐, 收藏, 编辑
摘要：brief : the quick sort can divide into two steps, the first step is partition, the second step is conquer the subset.i) as the first step, array A[lef... 阅读全文
Combinations [leetcode]
2014-07-13 16:49 by achuan_hu, 217 阅读, 0 推荐, 收藏, 编辑
摘要：描述： Given two integersnandk, return all possible combinations ofknumbers out of 1 ...n.For example,Ifn= 4 andk= 2, a solution is:[ [2,4], [3,4], [2... 阅读全文
Populating Next Right Pointers in Each Node II
2014-07-13 16:10 by achuan_hu, 122 阅读, 0 推荐, 收藏, 编辑
摘要：题目地址：https://oj.leetcode.com/problems/populating-next-right-pointers-in-each-node-ii/关键思路：讲节点的左右子节点链接起来，遍历节点的next节点，即可。class Solution {public: Tree... 阅读全文
文件属主获取
2014-03-07 11:05 by achuan_hu, 866 阅读, 0 推荐, 收藏, 编辑
摘要：win/linux中的文件属主获取方法，写了很多遍都记不住 - -， 还是记录一下，i）win中通过apiGetNamedSecurityInfo 获取到ower_sid, group_sid, 或者通过 getfilesecurity 获取到文件的file_sid, 通过GetSecurityDescriptorOwner/GetSecurityDescriptorGroup,获取到ower_sid, group_sid, 调用LookupAccountSid，获取ower/group 名。ii） win 中进程获取属主的方法，类似，通过，OpenProcessToken/GetTokenI 阅读全文
开博第一篇
2014-01-22 13:46 by achuan_hu, 132 阅读, 0 推荐, 收藏, 编辑
摘要：开博第一篇，算算日志，从毕业到现在工作1年半了，最近发现自己在处理些重复的问题，对之前碰到解决的问题没有做很好的总结，或者只是单纯解决问题，没有对相关进行深入了解，实在是可惜，所以在博客园开一个博客，希望自己在接下来的日子里头能够坚持下去，在这里记录些东西。 阅读全文