Completed Competitive_Coding-3

[DhruvParashar246]

No description provided.

[super30admin]

The student has provided solutions for two different problems: "K-diff pairs in Array" and "Pascal's Triangle". Here's the evaluation for each:

1. K-diff pairs in Array:

   • Correctness: The solution appears to correctly find the number of k-diff pairs using a two-pointer approach after sorting the array. It handles duplicates by skipping them after finding a valid pair.
   • Time Complexity: O(n log n) due to the sorting step, followed by O(n) for the two-pointer traversal, resulting in O(n log n) overall.
   • Space Complexity: O(1) additional space (excluding the input storage), as it only uses a few variables.
   • Code Quality: The code is clean and readable. The variable names are appropriate, and the logic is straightforward.
   • Efficiency: The solution is efficient for this problem. One minor improvement could be to add a check at the start if k < 0, as the problem likely expects absolute differences (though this depends on the exact problem statement).

2. Pascal's Triangle:

   • Correctness: The solution correctly generates Pascal's Triangle by building each row based on the previous row's values.
   • Time Complexity: O(n^2), where n is the number of rows, as each element (except the first and last in each row) is computed once.
   • Space Complexity: O(n^2) to store the entire triangle, which is optimal for this problem as the output requires it.
   • Code Quality: The code is well-structured and readable. The use of list comprehension for row initialization is good. The variable names are clear.
   • Efficiency: The solution is optimal for this problem. No significant improvements are needed.

General feedback:

• Both solutions are well-implemented and follow standard approaches for their respective problems.
• The code is clean, readable, and follows good practices.
• The student demonstrates a good understanding of time and space complexity considerations.
• For the K-diff pairs problem, adding a comment about handling duplicates would make the code even clearer.