Target Sum

Problem Highlights

• 🔗 Leetcode Link: https://leetcode.com/problems/target-sum/
• 💡 Difficulty: Medium
• ⏰ Time to complete: ___ mins
• 🛠️ Topics: Backtracking
• 🗒️ Similar Questions: Expression Add Operators

1: U-nderstand

Understand what the interviewer is asking for by using test cases and questions about the problem.

• Established a set (2-3) of test cases to verify their own solution later.
• Established a set (1-2) of edge cases to verify their solution handles complexities.
• Have fully understood the problem and have no clarifying questions.
• Have you verified any Time/Space Constraints for this problem?

Run through a set of example cases:

2: M-atch

Match what this problem looks like to known categories of problems, e.g. Linked List or Dynamic Programming, and strategies or patterns in those categories.

3: P-lan

Plan the solution with appropriate visualizations and pseudocode.

General Idea:

1) 

⚠️ Common Mistakes

• What are some common pitfalls students might have when implementing this solution?

4: I-mplement

Implement the code to solve the algorithm.

5: R-eview

Review the code by running specific example(s) and recording values (watchlist) of your code's variables along the way.

• Trace through your code with an input to check for the expected output
• Catch possible edge cases and off-by-one errors

6: E-valuate

Evaluate the performance of your algorithm and state any strong/weak or future potential work.

The complexity analysis based on how many elements there are in generateParenthesis(n).

• Time Complexity:
• Space Complexity: