Learn | Ayush Ranjan

Ayush Ranjan 🔬

learn / code / experience /

Learn

arrays & hashing

Set Membership Tricks

Convert presence checks into O(1) lookups.
Prefix Counts

Use running counts to answer range questions in O(1).
Frequency Map Patterns

A quick playbook for counting and matching with maps.

two pointers

Astro Nano

Minimal portfolio and research site built with Astro and no frameworks.

stack

Astro Micro

Astro Micro is an accessible and lightweight research site.

linked list

Signal Board

A playful dashboard that turns personal metrics into a calm ambient display.

sliding window

Field Notes

A long-form digital garden that mixes essays, sketches, and code experiments.

binary search

Task Timer

A minimal, keyboard-friendly timer for focused work sessions.

trees

Tree Views

Left, right, and level views without extra work.

tries

No entries yet.

heap/priority queue

Top-K with Heaps

Reduce a large search space with a small heap.

backtracking

Backtracking Templates

A generic skeleton for permutations and subsets.

© 2026 • Ayush Ranjan 🔬

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