Done Backtracking-1

[Manassa2000]

No description provided.

[super30admin]

Strengths:

• The student has demonstrated a good understanding of backtracking and recursion.
• The code is clean, well-commented, and easy to follow.
• The student has provided two correct implementations for CombinationSum.java, showing flexibility in approach.
• The time and space complexity analysis is accurate.

Areas for Improvement:

• In CombinationSum.java, the first implementation could be simplified further by using a single helper function with a for loop, as shown in the second implementation.
• The comments in the code could be more detailed to explain the logic, especially in ExpressionAddOperators.java where the tail and calc variables might not be immediately clear to a reader.
• The student could consider adding more edge case checks, such as handling empty input arrays or strings, although the current implementation handles them implicitly.