lct — LeetCode/DSA Tracker CLI

A personal command-line tool to track DSA problems with approaches, time/space complexity, takeaways, and topic digests. Built for engineers who want a searchable notebook of everything they've solved.

Install

npm install -g leetcode-tracker

Or clone and install locally:

git clone https://github.com/Shivarawat/leetcode-tracker
cd leetcode-tracker
npm install -g .

Usage

All commands work with either a problem ID or a partial name (case-insensitive). If multiple problems match, an interactive picker appears.

Add a problem

lct add 1 "Two Sum" easy --topic arrays --dsalgo "HashMap" --link "https://leetcode.com/problems/two-sum"

Show full details

lct show 1
lct show "two sum"

Add an approach (interactive)

lct approach "two sum"
# Prompts for: name, time complexity, space complexity, solution, note

Add a comment

lct comment "two sum" "Classic HashMap problem, pattern repeats everywhere"

Add a takeaway

lct takeaway "two sum" "Whenever you need O(n) lookup, think HashMap"

Mark as revisited

lct revisit "two sum"

List problems

lct list                          # all problems
lct list --topic graphs           # filter by topic
lct list --difficulty medium      # filter by difficulty
lct list --search "cycle"         # search by title
lct list --sort recent            # sort by date solved
lct list --sort difficulty        # sort easy → hard
lct list --sort revisits          # sort by revisit count

Review problems not revisited recently

lct review                # problems not reviewed in 7+ days
lct review --days 3       # custom threshold

Stats

lct stats                 # overall stats + streak
lct stats --topic graphs  # stats for a specific topic

Topic digest

Aggregates all takeaways, approaches, and comments for a topic into one view.

lct digest graphs
lct digest graphs --export   # saves to digest-graphs.md

Delete a problem

lct delete "two sum"

Export to CSV

lct export
lct export --output ~/Desktop/my-problems.csv

Import from Google Sheets

Export your sheet as CSV (File → Download → CSV) and run:

lct import ~/Downloads/my-sheet.csv

Expected columns:

S. No. | Question Link | Problem Statement | Topic | DS / Algo Used |
Difficulty | Approach 1 | TC | SC | Approach 2 | TC2 | SC2 |
Approach 3 | TC3 | SC3 | Things to Remember

Approach 2, Approach 3 columns are optional — blank cells are skipped.

Data storage

All data is stored locally at ~/.leetcode-tracker/data.json. No account or internet connection required.

Tech Stack

• Node.js — runtime
• Commander.js — CLI framework
• Inquirer.js — interactive prompts
• Chalk — terminal colors
• csv-parse — CSV import

License

MIT