摘要： 排序publicstaticvoidmain(String[]args){List<Demo>demoList=newArrayList<Demo>();demoList.add(newDemo(1,2));demoList.add(newDemo(1,3));demoList.add(newDemo(1,5));demoList.add(newDemo(4,2));demoList.add(newDemo(1,2));demoList.add(newDemo(2,4));demoList.add(newDemo(1,2));demoList.add(newDemo(2 阅读全文