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Java Solution for LeetCode algorithm problems, continually updating

There is a newer version: 1.24

22\. Generate Parentheses

Medium

Given `n` pairs of parentheses, write a function to _generate all combinations of well-formed parentheses_.

**Example 1:**

**Input:** n = 3

**Output:** ["((()))","(()())","(())()","()(())","()()()"] 

**Example 2:**

**Input:** n = 1

**Output:** ["()"] 

**Constraints:**

*   `1 <= n <= 8`