import java.io.*;
public class t3{
public static void main(String[] args){
StringBuffer sb=new StringBuffer();
for(int i=19968;i<40869;i++) //\u4e00-\u9fa5
sb.append((char)i);
try{
File f=new File("c:\\uu.txt");
FileWriter fr=new FileWriter(f);
fr.write(sb.toString());
fr.close();
}catch(Exception e){}
}
}
这个打出了所有汉字,不合要求。2,十六进怎么转为十进?
public class t3{
public static void main(String[] args){
StringBuffer sb=new StringBuffer();
for(int i=19968;i<40869;i++) //\u4e00-\u9fa5
sb.append((char)i);
try{
File f=new File("c:\\uu.txt");
FileWriter fr=new FileWriter(f);
fr.write(sb.toString());
fr.close();
}catch(Exception e){}
}
}
这个打出了所有汉字,不合要求。2,十六进怎么转为十进?
public class t3{
public static void main(String[] args){String hex="4E00";
int len=hex.length();
System.out.println(len);
int dec=0;
int tmp=0;
char c='\0';
for(int i=0;i<len;i++){
c=hex.charAt(i);
System.out.println(c);
if(c>='A')
tmp=(int)c-55;
else
tmp=c;
System.out.println(c);dec+=tmp*Math.pow(16,(len-i-1));
}
System.out.println(dec);}
}
import java.io.*;
public class t3{
public static void main(String[] args){
StringBuffer sb=new StringBuffer();
for(int i=19968;i<40869;i++) //\u4e00-\u9fa5
sb.append((char)i);
try{
File f=new File("c:\\uu.txt");
FileWriter fr=new FileWriter(f);
fr.write(new String(sb.toString().getBytes("GB2312")));
fr.close();
}catch(Exception e){}
}
}
public class t3{
public static void main(String[] args){
String hex="4E00";
int len=hex.length();
System.out.println(len);
int dec=0;
int tmp=0;
char c='\0';
for(int i=0;i<len;i++){
c=hex.charAt(i);
System.out.println("c: "+c);
if(c>='A' && c <='F'){
tmp=(int)c-55;
System.out.println("tmp: "+tmp);
}
else {
tmp=c - '0'; // 1
System.out.println("tmp: "+tmp);
}
dec = dec*16 + tmp;
}
System.out.println(dec);
}
}
F:\>javac t3.javaF:\>java t3
4
c: 4
tmp: 4
c: E
tmp: 14
c: 0
tmp: 0
c: 0
tmp: 0
19968