Generate Parentheses

[LeetCode] 22. Generate Parentheses

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 cnt2: dfs(cnt1, cnt2 + 1, temp + ')') dfs(0, 0, '') return res