Collections自定義List排序規則
阿新 • • 發佈:2019-01-08
Collections自定義List排序規則
//這裡的順序,是我自己定義的一個List<String> String[] regulation = {"jams","buke","rose","lua"}; final List<String> regulationOrder = Arrays.asList(regulation); String[] ordered = {"rose","jams","lua","rose","buke","jams","rose","buke","jams"}; List<String> orderedList = Arrays.asList(ordered); Collections.sort(orderedList, new Comparator<String>() { public int compare(String o1, String o2) { int io1 = regulationOrder.indexOf(o1); int io2 = regulationOrder.indexOf(o2); return io1 - io2; } }); System.out.println(orderedList);