Backtracking-1 solutions

[kalyan-ng22]

No description provided.

[super30admin]

Strengths:

• The student has a good understanding of backtracking and recursion, as evidenced by the correct implementation of both problems.
• The code is clean, well-commented, and easy to follow.
• The student correctly handles edge cases, such as the 0 precedence case in ExpressionOperators.

Areas for Improvement:

• The space complexity for CombinationSum should be more accurately described as O(n^2) due to the deep copies of the path list.
• In the CombinationSum solution, the base case checks could be reordered to check for target < 0 first to potentially save some recursive calls.
• The student could consider adding more comments to explain the tail value in the ExpressionOperators solution, as it is a crucial part of the logic for handling multiplication.