Java 数组

int[][] result=new int[len][2];
//        Arrays.sort(intervals, (v1, v2) -> v1[0] - v2[0]);
        Arrays.sort(intervals,new Comparator(){
            @Override
            public int compare(int[] o1,int[] o2){
                if(o1[0]==o2[0]){
                    return o1[1]-o2[1];
                }else {
                    return o1[0]-o2[0];
                }
            }
        });
        Integer[] t={5,9,6,2,1,4,3,7,8};
        Arrays.sort(t, new Comparator() {
            @Override
            public int compare(Integer o1, Integer o2) {
                return o2-o1;
            }
        });

        Arrays.copyOf(result,k+1);//从0到k+1
        return Arrays.copyOfRange(result,1,k+1);