在C语言中实现MD5算法———————————————————————————————————————————*/#ifndef PROTOTYPES#define PROTOTYPES 0#endiftypedef unsigned char *POINTER;typedef unsigned short int UINT2;typedef unsigned long int UINT4;#if PROT…
Implement int sqrt(int x). Compute and return the square root of x. 牛顿迭代 1 class Solution {2 public:3 int sqrt(int x) {4 // Start typing your C/C solution below5 // DO NOT write int main() function6 double ans x;7 8…
一、忘记除SYS、SYSTEM用户之外的用户的登录密码。用SYS (或SYSTEM)用户登录。CONN SYS/PASS_WORD AS SYSDBA;使用如下语句修改用户的密码。ALTER USER user_name IDENTIFIED BY newpass;注意:密码不能全是数字。并且不能是数字开头。否则会出现:ORA-009…
今天看到一个讨论贴:如何成为一个牛逼的数据分析师?其中有一贴如此总结。全文如下:There are two classes of skills that are needed to be a successful data analyst: both soft and technical skills are needed. The core work flow fo…