一、统计函数
CREATE TABLE student (id INT NOT NULL DEFAULT 1,name varchar(20) not null default ,chinese float not null default 0.0,english float not null default 0.0,math float not null default 0.0 );insert into student values (1,曹操,77,89,85);insert int…
90.子集II class Solution {public List<List<Integer>> subsetsWithDup(int[] nums) {List<List<Integer>> ans new ArrayList<>();List<Integer> list new ArrayList<>();//排序后便于去重Arrays.sort(nums);dfs(0,nums,ans,lis…