{ "data": { "question": { "questionId": "78", "questionFrontendId": "78", "categoryTitle": "Algorithms", "boundTopicId": 1068, "title": "Subsets", "titleSlug": "subsets", "content": "
Given an integer array nums
of unique elements, return all possible subsets (the power set).
The solution set must not contain duplicate subsets. Return the solution in any order.
\n\n\n
Example 1:
\n\n\nInput: nums = [1,2,3]\nOutput: [[],[1],[2],[1,2],[3],[1,3],[2,3],[1,2,3]]\n\n\n
Example 2:
\n\n\nInput: nums = [0]\nOutput: [[],[0]]\n\n\n
\n
Constraints:
\n\n1 <= nums.length <= 10
-10 <= nums[i] <= 10
nums
are unique.给你一个整数数组 nums
,数组中的元素 互不相同 。返回该数组所有可能的子集(幂集)。
解集 不能 包含重复的子集。你可以按 任意顺序 返回解集。
\n\n\n\n
示例 1:
\n\n\n输入:nums = [1,2,3]\n输出:[[],[1],[2],[1,2],[3],[1,3],[2,3],[1,2,3]]\n\n\n
示例 2:
\n\n\n输入:nums = [0]\n输出:[[],[0]]\n\n\n
\n\n
提示:
\n\n1 <= nums.length <= 10
-10 <= nums[i] <= 10
nums
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out-of-bounds<\\/code>\\u548c
use-after-free<\\/code>\\u9519\\u8bef\\u3002<\\/p>\\r\\n\\r\\n
\\r\\nstruct hash_entry {\\r\\n int id; \\/* we'll use this field as the key *\\/\\r\\n char name[10];\\r\\n UT_hash_handle hh; \\/* makes this structure hashable *\\/\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\\r\\n\\r\\n
\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n struct hash_entry *s;\\r\\n HASH_FIND_INT(users, &user_id, s);\\r\\n return s;\\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\\r\\n\\r\\n
\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n HASH_DEL(users, user); \\r\\n}\\r\\n<\\/pre>\\r\\n<\\/p>\"],\"csharp\":[\"C#\",\"
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