Скачать или смотреть Leetcode 3446 | Sort Matrix by Diagonals | Hindi | Java

Problem Link: https://leetcode.com/problems/sort-ma...
Solution Link: https://leetcode.com/playground/3fgNyTgZ

In this video, we solve the Sort Matrix Diagonally problem by grouping elements along each diagonal.
We use a map with (row - col) as the diagonal key and collect all values into lists.
Each diagonal is then sorted: upper diagonals in ascending order and lower diagonals in descending order.
To efficiently place values back, we convert the sorted lists into queues (ArrayDeque), so retrieving elements is O(1) instead of costly remove(0).
Finally, we rebuild the matrix by polling values from each diagonal queue.
This approach improves readability and avoids unnecessary overhead, while keeping the solution clean and efficient.

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