package?collection_set_demo;

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

public?class?CollectionsTest?{

	public?void?testSort2(){
		List<String>?stringList?=?new?ArrayList<String>();
		Random?random?=?new?Random();
		String?source?=?"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
		
		for(int?i?=?0;?i?<?10;?i++){
			String?string?=?"";
			do{
				int?length?=?random.nextInt(11);
				for(int?j?=?0;?j?<?length;?j++){
					char?x?=?source.charAt(random.nextInt(source.length()));
					string?=?string?+?x;
				}
			}while(stringList.contains(string));
			stringList.add(string);
			System.out.println("成功添加字符串："?+?string?+?"\t\t"?+?",字符串長度："?+?string.length());
			
			
		}
		
		System.out.println("----------------排序前---------------");
		for?(String?string1?:?stringList)?{
			System.out.println(string1);
		}
		Collections.sort(stringList);
		System.out.println("----------------排序后---------------");
		for?(String?string1?:?stringList)?{
			System.out.println(string1);
		}
	}
	public?static?void?main(String[]?args)?{
		//?TODO?Auto-generated?method?stub
		CollectionsTest?ct?=?new?CollectionsTest();
		ct.testSort2();
	}

}