Completed BinarySearch -1

[ashritha0806]

No description provided.

[super30admin]

Search inside a Rotated Sorted Array (Rotated_Sorted_Array.py)

Note: The verdict should be based on the overall correctness and efficiency of the solution. If the solution is correct and efficient, it should pass. Otherwise, it needs improvement.

Now, evaluate the student's solution.

VERDICT: NEEDS_IMPROVEMENT

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Search Inside a Sorted Array whose Length is unknown (Sorted_Array_Unknow_Size.py)

Your solution is well-written and follows the correct approach. Here are some points to consider:

1. The logic for expanding the range is correct: you double the high index until you find a range where the target might lie. However, note that if the target is very large and the array is small, the high index might become very large quickly, but that is acceptable because the array reader returns a large number for out-of-bound indices, and the binary search will adjust.
2. You have implemented the binary search correctly with integer mid calculation and proper boundary updates.
3. For the actual LeetCode submission, you should remove the local testing block and the ArrayReader class definition because the problem provides the ArrayReader interface. Your code should only include the search method within the Solution class.
4. One edge case to consider: if the array is empty, but the constraints say the array length is at least 1, so it's safe.
5. Your code is clean and well-commented. Good job!

Overall, your solution is correct and efficient. Just remember to remove the testing code for the actual submission.

VERDICT: PASS

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Search a 2D Matrix (Search_2D_Matrix.py)

Strengths:

• The solution correctly applies binary search to the entire matrix by converting the 2D indices into a 1D index, which is efficient and meets the problem constraints.
• The code uses integer division and modulus to compute row and column indices, which is the standard approach for this problem.
• The variable names are clear and the code is well-commented, making it easy to understand.

Areas for Improvement:

• The comment mentions "binary search on rows and columns", but actually it's a single binary search over the entire flattened array. The comment could be clarified to avoid confusion.
• The code uses (h - l) // 2 which is correct, but in Python, integer division is floor division, which is appropriate here. However, it's good practice to note that this prevents integer overflow, though it's less of a concern in Python compared to other languages.
• The solution is correct and efficient, so no major improvements are needed.

VERDICT: PASS