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3420. Count Non-Decreasing Subarrays After K Operations

3420. Count Non-Decreasing Subarrays After K Operations Difficulty: Hard Topics: Principal , Array , Stack , Segment Tree , Queue , Sliding Window , Monotonic Stack , Monotonic Queue , Weekly Contest…

• Count non-decreasing subarrays after k operations on array.
• Use monotonic deque to track prefix maximum block starts.
• Absorb blocks with max ≤ current element; shrink window if cost > k.

1h ago ·dev.to

Show HN: Isometric SF – A pixel-art map of the SF Bay Area

1h ago ·isometricsf.com

Why pay for free software? Who decides the open source stack under WordPress?

This post first appeared on courtneyr.dev: Why pay for free software? Who decides the open source stack under WordPress? Every WordPress site runs on an open source stack.

• WordPress operates on an open source stack including OS, web server, database, PHP, and browser.
• Recommended stack: PHP 8.3+, MariaDB 10.11+, Apache or NGINX with HTTPS support.
• Maintainers and committees at each stack layer decide changes and evolution.

1h ago ·dev.to

Why setInterval Dies at 30 Seconds in Manifest V3

The badge froze at 12:33. The session timer had been ticking every second in the background worker, and after I switched tabs for half a minute it simply stopped — no exception, no console error, just…

• setInterval function fails after 30 seconds in background service worker.
• Worker's idle timeout affects all tasks, not just setInterval.
• Use chrome.alarms for tasks needing persistence beyond 30 seconds.

1h ago ·dev.to