import?java.util.ArrayList;
import?java.util.Collections;
import?java.util.List;
import?java.util.Random;

public?class?StringRom?{
	static?String?string="0123456789QWERTYUIOPASDFGHJKLZXCVBNMqwertyuiopasdfghjklzxcvbnm";

	//創(chuàng)建一個(gè)字符串，且每次返回一個(gè)新字符串
	public?void?stringRandom(int?k){
		Random?randonm=new?Random();
		List<String>?list=new?ArrayList<>();
		
		for(int?i=0;i<k;i++){
			StringBuilder?sb=new?StringBuilder();
			int?lengTh=randonm.nextInt(10);
			for(int?j=0;j<=lengTh;j++){
				int?numb=randonm.nextInt(62);
				sb.append(string.charAt(numb));
			}
			list.add(sb.toString());
		}
		System.out.println("~~~~~~~~排序前~~~~~~~~");
		for?(String?str?:?list)?{
			System.out.println(str);
		}
		Collections.sort(list);
//		return?(String[])?list.toArray(new?String[list.size()]);
		System.out.println("~~~~~~~~排序前~~~~~~~~");
		for?(String?str?:?list)?{
			System.out.println(str);
		}
		
	}
//	public?String?[]?stringRandomSort(String?[]?string){
//		Collections.sort(string);
//		
//	}
	public?static?void?main(String[]?args)?{
		StringRom?sr=new?StringRom();
		
		sr.stringRandom(10);
		
	}
}