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How to sort an ArrayList in Java [duplicate]
...
List<Fruit> fruits= new ArrayList<Fruit>();
Fruit fruit;
for(int i = 0; i < 100; i++)
{
fruit = new Fruit();
fruit.setname(...);
fruits.add(fruit);
}
// Sorting
Collections.sort(fruits, new Comparator<Fruit>() {
@Override
public int compare(Fruit fruit2,...
Python3 integer division [duplicate]
In Python3 vs Python2.6, I've noticed that I can divide two integers and get a float. How do you get the Python2.6 behaviour back? Is there a different method to get int/int = int?
...
Generating a Random Number between 1 and 10 Java [duplicate]
...tion says, this method call returns "a pseudorandom, uniformly distributed int value between 0 (inclusive) and the specified value (exclusive)". This means that you will get numbers from 0 to 9 in your case. So you've done everything correctly by adding one to that number.
Generally speaking, if yo...
c++提取复数的实部和虚部 - C/C++ - 清泛网 - 专注C/C++及内核技术
... // 虚部
};
bool Parse(COMPLEX * cp, const char * strCplx, const int len)
{
memset(cp, 0, sizeof(COMPLEX));
char buf[MAX_BUF_LEN];
int signPos = -1, // +/-号位置
iPos = -1; // 结尾的i的位置
for (int i = len-1; i >-1; i--)
{
...
C语言判断文件是否存在 - C/C++ - 清泛网 - 专注C/C++及内核技术
...言判断文件是否存在用函数access，头文件是io.h，原型：int access(const char *filename, int amode);amode参数为0时表示检查文件的存在性，如果文件存...用函数access，头文件是io.h，原型：
int access(const char *filename, int amode);
amode参数为0时...
C++中判断文件、目录是否存在的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...相关操作。
File* fh = fopen("hello","r");
if(fh == NULL)
{
printf("%s","can not open the file");
}
三、_access
当然C中还有一种方式是直接调用c的函数库。
就是函数 int _access(const char* path,int mode);
这个函数的功能十分强大。
可以看看ms...
std::find，std::find_if使用小结 - C/C++ - 清泛网 - 专注C/C++及内核技术
...用std::find()，例如：
#include <vector>
#include <algorithm>
int _tmain(int argc, TCHAR* argv[], TCHAR* envp[])
{
std::vector<std::string> vec;
vec.push_back("one");
vec.push_back("two");
vec.push_back("three");
//查找
std::vector<std::string>::iterator it = std::find(vec....
mfc 画圆角矩形 - C/C++ - 清泛网 - 专注C/C++及内核技术
...Background );
return TRUE;
}
调用方法：
void CxxxView::OnPaint()
{
if (IsIconic())
{
CPaintDC dc(this); // device context for painting
SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
// Center icon in client rectangle
int cxIcon = GetSystemMetrics(S...
vc/mfc *通配符 批量删除文件 - C/C++ - 清泛网 - 专注C/C++及内核技术
...效，使用SHFileOperation函数：#include "stdafx.h"#include <windows.h>int _tmain(int argc, _TCHAR*...直接上代码，可直接运行亲测有效，使用SHFileOperation函数：
#include "stdafx.h"
#include <windows.h>
int _tmain(int argc, _TCHAR* argv[])
{
LPTSTR delFileName...
控件不响应OWNERDRAW消息 - C/C++ - 清泛网 - 专注C/C++及内核技术
控件不响应OWNERDRAW消息afx_msg voidOnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct);void COrderPaneDlg::OnDrawItem(int nIDCtl, LPDRAWITEM...afx_msg void OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemStruct);
void COrderPaneDlg::OnDrawItem(int nIDCtl, LPDRAWITEMSTRUCT lpDrawItemS...