Mastering Leetcode’s ‘Add to My List’ Feature: Curate, Track, and Optimize Your Interview Prep

Desired Outcome

After completing this guide you will be able to:

• Curate a custom list of Leetcode problems tailored to your interview goals.
• Track the status of each problem (Not Started, In Progress, Completed) automatically.
• Filter and sort your list by tags, difficulty, or status to focus study sessions.
• Recover from common add‑list failures and keep your collection clean.

Prerequisites

• Active Leetcode account (free or paid). Note that free accounts cannot add premium‑only problems.
• Stable internet connection; the add action is performed via a POST request to Leetcode’s API.
• Modern web browser (Chrome, Firefox, Safari) or the official Leetcode mobile app.

Step‑by‑Step Procedure

1. Navigate to a Problem Page
   Open the problem you want to add. The "Add to My List" button is located just below the problem title and next to the difficulty badge.
2. Click the Button
   Click 'Add to My List' (or tap on mobile). The button will change to "Added" and a small toast notification will appear.
3. Verify Immediate Addition
   Open the My List tab from the top navigation. The problem should appear with a status of Not Started.
4. Batch‑Add (Optional)
   
   • In search results, check the boxes next to multiple problems.
   • Click the bulk‑add icon (three horizontal dots) and select "Add to My List".
   • All selected problems will appear in My List with status Not Started.
5. Filter Your List
   Use the filter panel on the left to narrow down by Difficulty, Tag, or Status. For example, to practice only medium‑level “Linked List” problems:
   • Set Difficulty to Medium.
   • Check the “Linked List” tag.
   • Apply the filter; the list updates instantly.
6. Track Progress
   Each problem’s status updates automatically after you submit a solution:
   • Not Started – no submissions yet.
   • In Progress – at least one submission that failed or passed partially.
   • Completed – all test cases passed.
7. Remove If Needed
   Hover over a problem in My List, click the trash icon, and confirm. The problem is removed from the collection but remains on Leetcode.

Checking Your List

• Navigate to My List and confirm the problem appears.
• Open the problem from the list and verify the status indicator shows Not Started.
• Submit a correct solution; the status should transition to In Progress then Completed after passing all tests.
• Use the filter controls to ensure only the intended tags appear.
• Refresh or log out/in to confirm persistence across sessions.

Troubleshooting and Recovery

• Button Unresponsive – Check the network tab in dev tools for a failed POST request. Retry after verifying connectivity.
• Duplicate Entries – Leetcode ignores duplicates; no duplicate rows will appear. If you see duplicates, clear browser cache and refresh.
• Large List Slows Page Load – Consider splitting the list into multiple sub‑lists (if the feature is available in your plan) or using tags to segment your work.
• Premium Problem Not Added – Free accounts cannot add premium‑only problems. Upgrade to a paid plan or skip those questions.

Advanced Tips and Best Practices

• Use the Search + Add workflow: search for a tag, then bulk‑add the top N results to keep the list focused.
• Mark problems as Completed even if you solved them using an external IDE. This keeps your progress accurate.
• Export your list via the Export button (if available) to keep a backup in CSV format.
• Schedule weekly reviews: filter by Not Started and solve at least one problem each session.

Summary

The “Add to My List” feature is a lightweight, built‑in study manager that lets you curate, track, and filter Leetcode problems. By following the steps above, you can create a focused question bank, monitor progress automatically, and recover from common issues, all within the Leetcode ecosystem.