Completed DP-2

[ManasviReddy25]

No description provided.

[super30admin]

Paint House (Problem1.py)

Excellent work! Your solution demonstrates a strong understanding of dynamic programming and optimization techniques. Here are some specific strengths and minor suggestions:

Strengths:

1. Optimal Time Complexity: Your O(m) solution is exponentially better than the reference solution's O(2^n) approach. This shows you understand how to optimize recursive solutions with DP.
2. Optimal Space Complexity: Your O(1) space solution is the best possible - you cleverly use only scalar variables instead of an array.
3. Backward Iteration: Working from the last house to the first is an elegant approach that naturally leads to O(1) space.
4. Excellent Comments: Your inline comments explaining why tempR and tempB are needed are particularly helpful - this is a common pitfall in this type of problem.
5. Clear Variable Naming: Using descriptive names like colorR, colorB, colorG makes the code very readable.

Minor Suggestions:

1. Edge Case Handling: Consider what happens if costs is empty. Currently, m = 0 would cause costs[m-1] to access costs[-1], which in Python would wrap around to the last element. However, given the problem constraints (1 ≤ n ≤ 100), this edge case won't occur, but it's good practice to handle it.
2. Unused Variable: The variable n is assigned but never used. You could remove it for cleaner code.
3. Method Signature: In Python, the standard convention for LeetCode solutions is def minCost(self, costs: List[List[int]]) -> int: with type hints. Adding type hints would improve code quality.

Overall, this is an excellent solution that goes above and beyond the reference solution in terms of efficiency.

VERDICT: PASS

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Coin Change II (Problem2.py)

E.g.,
VERD:
VERDICT: PASS

VERDICT: PASS