通過(guò)實(shí)現(xiàn)Comparator接口的compare方法來(lái)完成自定義排序

private?static?void?sortBaseTypeByIDefineMode()?{
????????System.out.println("before?sort:");
????????PrintUtil.showList(intList);
????????System.out.println("=========================");
????????Collections.sort(intList,new?Comparator<Integer>()?{

????????????@Override????????????public?int?compare(Integer?o1,?Integer?o2)?{????????????????//?返回值為int類型，大于0表示正序，小于0表示逆序
????????????????return?o2-o1;
????????????}
????????});
????????System.out.println("after?sort:");
????????PrintUtil.showList(intList);
????}