Given a square matrix, determine whether all elements on its main diagonal are identical.

LeetCode 346. Moving Average from Data Stream – design a class that maintains a sliding window of size k over a data stream and returns the current moving average on each insertion.

LeetCode 480. Sliding Window Median – for an integer array and window size k, output the median of the numbers inside the window as it slides one position at a time.

https://leetcode.com/problems/moving-average-from-data-stream/ https://leetcode.com/problems/sliding-window-median/

Meta Machine Learning Engineer interview question: Check diagonal and compute window statistics. {"blocks": [{"key": "ab9d482e", "text": "Question", "type": "header-two", "depth": 0, "inlineStyleRanges": [], "entityRanges": [], "data": {...