package?com.imooc.collection;

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

public?class?Collections?{
	public?void?testSort1(){
		List<Integer>integerList=new?ArrayList<Integer>();
		Random?random=new?Random();
		Integer?k;
		for(int?i=0;i<10;i++){
			do{k=random.nextInt(100);}while(integerList.contains(k));
		integerList.add(k);
		}
		System.out.println("------------排序前-------------");
		for?(Integer?integer?:?integerList)?{
			System.out.println("元素："+integer);
		}
	???Collections.sort(integerList);
	}

	public?static?void?main(String[]?args)?{
		//?TODO?Auto-generated?method?stub

	}

}

詳細的是 The method sort(list<Integer>)is undefined for the type Collections