[IMP] Two-Pointer-2

[amitmittal117]

No description provided.

[super30admin]

Your solution for the "Merging of 2 arrays" problem is excellent. It correctly implements the optimal algorithm with O(m+n) time and O(1) space. The code is clean and easy to understand.

However, note that the problem requires you to merge into nums1, and your solution does that correctly. You have also correctly handled the edge cases (like when n=0 or m=0) because the while loops conditionally check the pointers.

One small suggestion: you might consider adding a comment to explain why you don't need to handle remaining elements in nums1 (because they are already in the correct position). This can make the code even more understandable to others.

Also, please be cautious when submitting multiple files. The problem specifically asks for the solution to the "Merging of 2 arrays" problem, so you should ensure that your submission only includes the relevant code. The other two solutions are for different problems and should not be included in the same file unless specified.

Overall, great job!

[super30admin]

Your solution for the merge problem is excellent. It is correct, efficient, and well-written. You have correctly implemented the three-pointer technique to merge the arrays from the end, which avoids overwriting any elements in nums1 that haven't been processed yet. This is a common and efficient approach for such problems.

Strengths:

• Correct handling of all edge cases (e.g., when one array is empty).
• Optimal time and space complexity.
• Clean and readable code.

Areas for improvement:

• While your solution is correct, it might be helpful to add a brief comment explaining the purpose of each pointer for clarity, especially for someone new to the problem.
• Note that the problem states that the arrays are sorted in non-decreasing order, which is the same as increasing but allows duplicates. Your solution handles duplicates correctly.

However, please note that the problem you were asked to solve was only the merge problem. In the future, make sure to submit only the relevant code for the problem being evaluated. The inclusion of other solutions might confuse the evaluator.