added cpp program to generate parenthesis issue #482

[simran2607]

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Description 📜

Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses. Example 1: Input: n = 3 Output: ["((()))","(()())","(())()","()(())","()()()"]

Type of change 📝

• ✅Code

Programming Language

• ✅C++

Domain of Contribution 📊

• ✅ Backtracking