backtracking 1 completed

[sathvikareddy18]

No description provided.

[super30admin]

Strengths:

• Both solutions correctly implement the problems using backtracking, demonstrating a good understanding of the technique.
• The code is clean, readable, and follows good practices like using helper functions.
• Edge cases, such as leading zeros in addOperators, are handled correctly.

Areas for Improvement:

• In combinationSum, the path_copy variable is created but never used. This unnecessary operation should be removed to improve clarity and efficiency.
• Consider adding comments to explain the logic, especially in addOperators, where the handling of calc and tail might not be immediately obvious to readers.
• For consistency, consider using the same style for helper functions (e.g., either as class methods or standalone functions).