数组、list排序
//数字排序 int[] intArray = new int[] {4, 1, 3, -23}; Arrays.sort(intArray); 输出: [-23, 1, 3, 4] //字符串排序,先大写后小写 String[] strArray = new String[] {"z", "a", "C"}; Arrays.sort(strArray); 输出: [C, a, z] //严格按字母表顺序排序,也就是忽略大小写排序 Case-insensitive sort Arrays.sort(strArray, String.CASE_INSENSITIVE_ORDER); 输出: [a, C, z] //反向排序, Reverse-order sort Arrays.sort(strArray, Collections.reverseOrder()); 输出:[z, a, C] //忽略大小写反向排序 Case-insensitive reverse-order sort Arrays.sort(strArray, String.CASE_INSENSITIVE_ORDER); Collections.reverse(Arrays.asList(strArray)); 输出: [z, C, a] java List排序 Collections.sort(menuSecondList, new Comparator<Record>() { @Override public int compare(Record o1, Record o2) { int i = o1.getInt("sort") - o2.getInt("sort") ; if(i == 0){ return o1.getInt("sort") - o2.getInt("sort"); } return i; } });