backtracking1 done

[desaiparam]

No description provided.

[super30admin]

Strengths:

• The code is well-structured and follows best practices.
• The use of backtracking is implemented correctly in both solutions.
• The solutions are efficient and solve the problems accurately.

Areas for Improvement:

• The time and space complexity analyses need to be more accurate. For combinationSum, the time complexity is O(2^N) and space complexity is O(N). For addOperators, the time complexity is O(2^N.N) and space complexity is O(N), but the explanations could be clearer.
• The comments could be more detailed to explain the backtracking process and the reasoning behind the pivot index in the combinationSum solution.
• The helper function in addOperators could benefit from more detailed comments explaining the tail and calc parameters.