#677Medium#32 in IBM's list· asked at 32 companies
Generate Parentheses
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What we know
Example 1
Input: n = 3 Output: ["((()))","(()())","(())()","()(())","()()()"]
Example 2
Input: n = 1 Output: ["()"]
Constraints
- •
1 <= n <= 8 - •
Each result string has length exactly
2 * n.