Function basic

78. Subsets/src/main.rs:27–38

()

    #[test]
    fn basic() {
        assert_eq!(Solution::subsets(vec![1,2,3]), vec![
            vec![3],
            vec![1],
            vec![2],
            vec![1,2,3],
            vec![1,3],
            vec![2,3],
            vec![1,2],
            vec![]
        ]);
    }
}