import?java.util.ArrayList;
import?java.util.Collections;
import?java.util.List;
import?java.util.Random;
public?class?randomstring?{
?String?possible="abcdefghijklmno"
? +?"pqrstuvwxyzABCDEFGHIJKLMNO"
? +?"PQRSTUVWXYZ1234567890";
List<String>?string=new?ArrayList<String>();
String?tempstring2;
public?void?addstring(){
for(int?i=0;i<10;i++){
System.out.println("這是第"+(i+1)+"次循環");
do{
int?digits?=?new?Random().nextInt(10)?+?1;
//System.out.println(digits);
StringBuilder?tempstring=new?StringBuilder();
for?(int?j=0?;j<digits;j++){
int?num?=?new?Random().nextInt(62);
tempstring.append(possible.charAt(num));
}
System.out.println("生成了"+tempstring);
String?tempstring2=tempstring.toString();
}
while(string.contains(tempstring2));
string.add(tempstring2);
System.out.println("添加了字符串"+tempstring2);
}
}
public?void?sortstring(){
System.out.println("--------排序前的字符串為-----------");
for(String?a:string){
System.out.println(a);
}
System.out.println("--------排序后的字符串為-----------");
Collections.sort(string);
for(String?a:string){
System.out.println(a);
}
}
public?void?testadd(){
String?a="abc";
String?b="ab";
string.add(a);
System.out.println(string.contains(b));
}
public?static?void?main(String[]?args)?{
//?TODO?Auto-generated?method?stub
randomstring?rs=new?randomstring();
rs.addstring();
rs.sortstring();
//rs.testadd();
}
}
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