wfwei

StringBuffer sb = new StringBuffer();
File f = new File(file);
if (f.exists()) {
    System.out.println("file not exist");
    try {
        BufferedReader br = new BufferedReader(new InputStreamReader(
            new FileInputStream(f)));
        while ((s = br.readLine()) != null) {
            sb.append(s);
        }

wfwei

public static void fileCopy( File in, File out )

   
throws IOException   
{   


FileChannel inChannel = new 

FileInputStream( in ).getChannel();   

wfwei

 /**
     * TIKA-332: Check for meta http-equiv tag with charset info in
     * HTML content.
     * <p>
     * TODO: Move this into core, along with CharsetDetector
     */ 
    private String getEncoding(InputStream stream, Metadata metadata) throws IOException {
        stream.mark(META_TAG_BUFFER_SIZE);
        char[] buffer = new char[META_TAG_BUFFER_SIZE];
        InputStreamReader isr = new InputStreamReader(stream, "us-ascii");

wfwei

/* MARK 使用Matcher.quoteRepalcement()过滤特殊字符 */
matchRes.appendReplacement(sb, Matcher.quoteReplacement(replacement));

// 格式化日期
new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(System.currentTimeMillis());

public void getNdayBefor(int n){
      SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		Calendar now = Calendar.getInstance();
		now.set(Calendar.DATE, now.get(Calendar.DATE) - n);

wfwei

from datetime import datetime
import time

now = datetime.now()
u = str(long(time.mktime(now.timetuple())))

wfwei

#include <stdio.h>
#include <string.h>
#include <math.h>
#define MAX 100

/**
 一个特殊的国家忌讳7这个数字，所有包含7的数字他们都不用，
 改用下一个数字，比如7他们用8代替，17用19代替。
 给定这个国家的数字，如何编程翻译成我们用的数字。
 **/

wfwei

#include <stdio.h>

/*
首先定义运算"swap"：从数组中移除一个元素，然后放在该数组的尾部。
用最少的“swaps"将数组排序。
比如，[3 1 2 4]，最少需要[3 1 2 4]->[1 2 4 3]->[1 2 3 4]

程序的输入为小于65536的正整数，数组长度小于100
*/

wfwei

package mine.forfun;

public class InfiniteRecursion {
    
	@Override
	public String toString(){
		return " InfiniteRecursion address: " + this; // + super.toString();
	}
	
	public static void main(String[] args) {

wfwei

import static java.lang.Math.*;
import static java.lang.System.out;

public class StaticImport {
    public static void main(String args[]){
        double r = cos(PI * theta);
        out.println(r);
    }
}

wfwei

#include "stdio.h"

void move(int id, char f, char t){
    printf("move %d from %c to %c\n", id, f, t);
}

void hanoi(int n, char a, char b, char c){
	if(n==1){
		move(n, a, c);
	}else{