Completed dp-1

[shinjaneegupta]

No description provided.

[super30admin]

Your solution for the Coin Change problem is excellent. You have implemented the dynamic programming approach efficiently with O(m*n) time and O(n) space, which is optimal for this problem. Your code is clean and well-commented. The approach is correct and handles all edge cases.

One minor note: in the problem constraints, the coins can be as large as 2^31-1, but the amount is only up to 10^4. So, when iterating with each coin, if a coin is larger than the amount, it can be skipped to avoid unnecessary iterations. However, this is a minor optimization and does not change the overall complexity. For example, you could add a check before the inner loop to skip coins that are larger than the current target (but since the inner loop starts from the coin value, if the coin is larger than amount, the inner loop won't run anyway). So it's already handled.

Overall, great job!

[super30admin]

Your solution for the Coin Change problem is excellent. It correctly uses dynamic programming with a 1D array to achieve an efficient solution. The time and space complexities are optimal for this approach. The code is clean and well-commented.

One minor note: in the Coin Change solution, the inner loop iterates from coin to amount. This is standard and efficient. However, it's worth noting that if the coins were sorted in descending order, it might lead to slightly better performance in some cases (though not asymptotically), but it is not necessary.

For the House Robber problem, your solution is also correct and efficient. However, note that the problem was not part of the evaluation for this specific problem. But since you provided it, I can say it's good.

Overall, great job! You have demonstrated a strong understanding of dynamic programming.