1.数组转换成List,
Arrays.asList(apple,apple1,apple2,apple3); String[] ss = {"1","2"}; Arrays.asList(ss);
2.List排序
Collections.sort(list, new Comparator<Apple>() { @Override public int compare(Apple o1, Apple o2) { return Integer.compare(o1.getWeight(),o2.getWeight()); } });
通过compare方法比较前后顺序,相等=0,大于=1,小于=-1,小的放前面,也可以自己定义返回1还是-1实现大数排前面
3.碰到再加