Arrays Tracker
69 array problems across eight phases, curated to install a reduction table rather than a checklist — index discipline, two pointers, prefix sums and difference arrays, fixed and variable windows, Kadane, then seven Hard consolidations. Binary search is deliberately out of scope. Each row cycles through fresh / assisted / revised, and Part 1 carries the per-problem derivation loop and log template the whole set is built around.
After this you should be able to
- Explain the core idea in Arrays Tracker
- Apply Arrays Tracker in a representative exercise
Interactive tool
This page builds itself in the browser rather than storing its content as markup, so there is nothing for the content pipeline to compile. It still works in full on the static site.
Source: DSA/trackers/arrays.html on the static site.
Rebuilding this as a React component is the natural next step — the progress data it keeps would then sync like everything else.