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g1901_2000.s1980_find_unique_binary_string.readme.md Maven / Gradle / Ivy

1980\. Find Unique Binary String

Medium

Given an array of strings `nums` containing `n` **unique** binary strings each of length `n`, return _a binary string of length_ `n` _that **does not appear** in_ `nums`_. If there are multiple answers, you may return **any** of them_.

**Example 1:**

**Input:** nums = ["01","10"]

**Output:** "11"

**Explanation:** "11" does not appear in nums. "00" would also be correct.

**Example 2:**

**Input:** nums = ["00","01"]

**Output:** "11"

**Explanation:** "11" does not appear in nums. "10" would also be correct.

**Example 3:**

**Input:** nums = ["111","011","001"]

**Output:** "101"

**Explanation:** "101" does not appear in nums. "000", "010", "100", and "110" would also be correct.

**Constraints:**

*   `n == nums.length`
*   `1 <= n <= 16`
*   `nums[i].length == n`
*   `nums[i]` is either `'0'` or `'1'`.
*   All the strings of `nums` are **unique**.