leetcode-problem-picker

LeetCode-Problem-Picker uses your history to select problems catered to your goals and needs.

Its purpose is to: Track progress in order to identify and improve on areas of weakness Choose problems that are most beneficial: frequently asked by the top tech companies Ensure balance between all subjects with weighted rotation.

During my leetcode journey, I discovered the answer to "which problems should I do next?" depend on goals and progress:

1. Topic Focus: Narrow down to 1+ subjects e.g. "trees, graphs or DP". Intended for learning and focusing on weaknesses.
2. Frequently Asked: Questions from a list, e.g. ones asked by companies or list of Blind's Curated 75. The default.
3. Level Up (WIP): Deduces user's "skill range" for each topic in order to challenge appropriately.
4. Weighted random (TODO): Weighted towards questions with high like count, greater like/dislike ratio, etc.

Setup:

git clone https://github.com/evliang/leetcode-problem-picker.git

Usage:

python lcpp.py [-t stack trie graph dp] [--list airbnb google blind75 skipped] [-k 5] [-i]

--topic_list -t     selects from a pool of problems associated with a subject (e.g. trie, greedy, graph)
--list -l           chooses problems from one or more text files (comma-delimited)
--num_problems -k   number of problems to get
--interactive -i    interactive mode. Preferred way to input data. See section below for more info.
note: no topic or list will result in a problem randomly being selected

python lcpp.py --info 91 Displays information about a specific problem: Name, difficulty, Acceptance rate, and companies that ask it

Interactive Mode:

This mode selects and displays a single problem and waits for input:

info                displays details about problem: problem name, difficulty, acceptance rate
hint                displays topics related to a solution
y/n,num_errs,time   Enter data regarding attempt. See next section for details
easy                mark as completed (quickly), then selects a different problem
hard                adds to a hard/skipped list. selects a less similar, less challenging problem
revisit [ID]        mark problem as one to revisit later
refresh [ID]        mark problem as one to "refresh" on later
pause               pause the timer
break               take a break. restarts the timer
quit                stop the program

Completed Problems (optional/recommended):

To maximize this program, you need to maintain a list of completed problems. This can be done in the following ways:

1. interactive mode: After completion of each assigned problem, the result is appended to completed.csv.
2. completed.txt: Best if you have a history of solving leetcode problems. The file expects a comma-delimited list of problem numbers e.g. 78,5,42,1337 To quickly populate with leetcode data:

• Login to leetcode and visit your list of solved problems. Select "All" rows per page in the bottom-left dropdown.
• Open up Developer Tools (F12) and run this line in your Console tab: console.log(Array.from(document.querySelectorAll('.reactable-data tr td[label="#"]')).map(x => x.textContent).toString())
• Copy the list and save into completed.txt

3. completed.csv: The file that interactive mode writes to. Provides details about attempt. One problem per line Expected format: LC number,was solved,[num_errors],[time],[date]

LC number           integer
was solved          string. valid inputs: y/n (or yes/no)
num_errors          number of mistakes made when solving problem
time                amount of time spent on the problem (minutes)
date                DateTime. date completed