public static void main(String[] args) {
        int[]  num ={10,1,2,7,6,1,5};
        List<List<Integer>> result = new Combination_Sum_II().combinationSum2(num,8);
        for (int i=0;i< result.size() ;i++ ) {
            System.out.println(result.get(i));
        }
    }