amd 2 in 1

Today in Ubuntu Kylin installed VirtualBox, and then I want to delete a new point, the result of normal situation can not be deleted, I will find the VirtualBox directory all deleted,And then through the Apt-get Remove and other commands can not be deleted, the title shows the errorChild process installed Pre-removal script returned error number 1On the internet to find a lap, a great deal of effort to find the following solutions, record,Http://www.xuebuyuan.com/2153374.htmlsudo gedit/var/lib/d

/* * Design 4 Threads 2 pairs of j-1 2 pairs of j+1 * * * * */ Class J { private int j = 0; public synchronized void Plus () {//j+ j + +; System.out.println ("+ +" + thread.currentthread (). GetName () + ":" + j); } public synchronized void minus () {//j- j--; System.out.println ("--" + Thread.CurrentThread (). G

[Go to] complete ArcGIS custom tool tutorial 1/2 I. Client -- Tag on the page:ClientAction = "EsriMapRectangle"ServerAction = "com. esri. adf. web. faces. event. ZoomInToolAction"ClientPostBack = "true"/>Ii. Client-clientActionClientAction refers to a javascript class, which must inherit EsriMapToolItem and overload several functions:Appendix 11. The first is: Object. inheritsFrom (Object parent), which is

In the shell program, the most commonly used FD (file descriptor) is about three, respectively:0 is a file descriptor that represents the standard input (stdin)1 is a file descriptor that represents the standard output (stdout)2 is a file descriptor that represents a standard error (STDERR)In the standard case, these FD are associated with the following devices, respectively:stdin (0): Keyboard keyboard inp

Transferred from: http://www.360doc.com/content/13/0523/16/7044580_287544243.shtml on the shell:0 indicates standard input1 indicates standard output2 indicates standard error output> default to standard output redirect, same as 1>2>1 means redirecting the standard error output to the standard output.>file means to redirect both the standard output a

Int a [5] = {1, 2, 3, 4, 5}; printf ("% d \ n", * (int *) ( a + 1)-2 );, printf % d What is the result of a certain convincing pen question in a certain year? The answer is 4. Why? My understanding (do not know if it is correct ): A is an array pointer of the int type [5], so a plus

Programming for computing1 ^ 1 + 2 ^ 2 + 3 ^ 3 + ...... + N ^ nWhere N is an arbitrary integer. (Note: consider the case where the result may be out of the long range) Note: This method usesInteger array elementsStores each digit of a large number. ====================================== # Include Using namespace STD; Const int n = 10000; // defines the maximu

2-1-single-chain table ordered Storage Structure-linear table-Chapter 2nd-Data Structure textbook source code-yan Weimin Wu Weimin edition, 2-1-Data Structure Textbook source code Chapter 2 linear table-sequence storage structure of a single-chain table -- Data Structure-yan

/***** JSON = [{ID: 1}, {ID: 2}] convert "[{ID: 1}, {ID: 2}] "*****/Jsontostring = function (OBJ ){If (OBJ = undefined ){Return "";}VaR r = [];If (typeof OBJ = "string") Return "\" "+ obj. replace (/([\ "\])/g," \ $1 "). replace (/(\ n)/g, "\ n "). replace (/(\ r)/g, "\ r ")

Package Cn.itcast.heima2;import Java.util.concurrent.atomic.atomicinteger;import Java.util.concurrent.locks.condition;import Java.util.concurrent.locks.lock;import Java.util.concurrent.locks.reentrantlock;public class Threeconditioncommunication {public static void main (string[] args) {final business business = new Business (), New Thread (new Runnable () {@Override public void run () {for (int i=1;i Three threads communicate with each other thread

#!/usr/bin/env python# Coding:utf-8Import Redef Dealwith (Express): Express.replace ('+-','-') Express.replace ('--','+') returnexpressdef Col_suanshu (exp):if '/' inchexp:a,b= Exp.split ('/') returnStrfloat(a)/float(b))if '*' inchexp:a,b= Exp.split ('*') returnStrfloat(a) *float(b) def get_no_barcate (Express): Express=express.strip ('()') Print ('>>>', Express) whileTrue:ret= Re.search ("-?\d+\.? \d*[*/]-?\d+\.? \d*", Express)ifRet:res=Col_suanshu (Ret.group ()) Express= Ex

Some small algorithms are of the Java version, and a large number of questions on the network are aimed at C ++. Therefore, Java implementation is rare, but they are the basis of the test, The implementation is the same. You can broaden your thinking and be helpful. /*** 1 hop steps* Question: there are N levels in a step. If you can skip 1 level at a time, you can also skip

1. ERROR/1The system is primarily used to define internal errors: There are 10 types of run time error built into Erlang:Function_clause/case_clause/if_clause/badmatch/badarg/undef/badarith/badfun/badarity/system_limit, For example: 1> erlang:binary_to_list (1). * * exception Error:bad argument in function binary_to_list/

Int W [2] [3], (* PW) [3]; PW = W;Which of the following is false?A. * (W [0] + 2)B. * (PW + 1) [2]C. Pw [0] [0]D. * (PW [1] + 2) This evening I carefully studied the multi-dimensional array of C and the pointer to the multi-dim

Recently find an internship, in doing test assignment encountered such a problem, on the way to record:Said, there are 1 to 100 a total of 100 numbers, put into a circle. Starting from 1, every 1, 2, 3, 4 ... The number takes a number, keeps looping, and finally leaves a few? Specifically, the beginning (0 numbers) Tak

Print? /* Start the comments in the program header (to avoid any problems encountered during the submission of blog posts, the slash used to indicate that the comments have been deleted)* Copyright and version Declaration of the program* All rights reserved.* File name: txt. c* Author: liuyongshui* Question: f = 1-i/2! + 1/3! -.... +

Print? /* Start the comments in the program header (to avoid any problems encountered during the submission of blog posts, the slash used to indicate that the comments have been deleted)* Copyright and version Declaration of the program* All rights reserved.* File name: txt. c* Author: liuyongshui* Question: f = 1-i/2! + 1/3! -.... +

s[0]*31^ (n-1) + s[1]*31^ (n-2) + ... + s[n-1] hash with this algorithm s[0]*31^ (n-1) + s[1]*31^ (n-2) + ... + s[n-1] hash with this algori

Idea: If we were to fill 0 in front of the number , we would find that the N-bit all 10 binary number is actually N from 0 to 9 of the full array. That is to say, we arrange each digit of the number from 0 to 9, and we get all the 10 binary numbers. 1 /**2 *ch Storing numbers3 *n n Number of digits4 *index Count Value5 **/6 Private functionNum (ch:array,n:int,index:int):void7 {8 if(index==N)9 　　 {Ten Tra

After the Silverlight 2 Beta 2 release, there have been a lot of changes on the original Beta 1 basis. This article summarizes the changes between Silverlight 2 Beta1 and Beta 2, as well as some of the issues that you may encounter during the upgrade of Silverlight 2.0 Beta