Completed Leetcode 54, 498 and 238

[allurkarsneha]

No description provided.

[super30admin]

Product of Array Except Self (Problem3-Leetcode54.py)

The student has submitted a solution for "Spiral Matrix" (LeetCode 54) instead of "Product of Array Except Self" (LeetCode 238). Please resubmit with the correct solution for the Product of Array Except Self problem. The expected approach involves computing prefix and suffix products to achieve O(n) time complexity without using division.

VERDICT: NEEDS_IMPROVEMENT

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Diagonal Traverse (problem1-leetcode238.py)

It appears that the wrong solution was submitted for this problem. The Diagonal Traverse problem requires traversing an m x n matrix in a specific diagonal pattern (alternating between upward-right and downward-left directions), and returning all elements in that order.

Please resubmit with a solution that:

• Takes an m x n matrix as input
• Traverses elements diagonally, alternating direction at each diagonal
• Handles boundary conditions when reaching the top, bottom, left, or right edges of the matrix
• Returns all elements in the diagonal traversal order

A common approach is to track the current row and column, along with a direction flag, and update positions accordingly. Alternatively, you can group elements by their diagonal index (i + j) and reverse alternating diagonals.

VERDICT: NEEDS_IMPROVEMENT

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Spiral Matrix (problem2-Leetcode498.py)

You have submitted a solution for the wrong problem. The problem asked for "Spiral Matrix" (Leetcode 54), but you submitted a solution for "Diagonal Traverse" (Leetcode 498).

To solve the Spiral Matrix problem, you need to:

1. Traverse the matrix in a spiral order (right, down, left, up)
2. Use boundary tracking (top, bottom, left, right) to know when to change direction
3. Handle edge cases where rows or columns are exhausted

Please review the problem statement carefully and submit a solution that actually solves the Spiral Matrix problem. The reference solution provides a good approach using boundary tracking.

VERDICT: NEEDS_IMPROVEMENT