LeetCode Practice

Solutions to LeetCode problems in Python.

Adding a new problem

python add.py <problem_number>

This will:

• Fetch the problem title, difficulty, and link from LeetCode
• Generate a file in main/ with the solution stub and example test cases pre-filled
• Print an error if the problem already exists or requires a Premium subscription

Example:

python add.py 53
# Created: main/0053_maximum_subarray.py  [Medium]

Once the file is created, fill in your solution. The expected outputs in each assert are already filled in.

📊 Progress tracker

     

last updated June 21, 2026

🟢 Easy (5)

#	Title	Solution
1	Two Sum	code
14	Longest Common Prefix	code
70	Climbing Stairs	code
88	Merge Sorted Array	code
643	Maximum Average Subarray I	code

🟡 Medium (13)

#	Title	Solution
2	Add Two Numbers	code
3	Longest Substring Without Repeating Characters	code
11	Container With Most Water	code
53	Maximum Subarray	code
152	Maximum Product Subarray	code
198	House Robber	code
200	Number of Islands	code
207	Course Schedule	code
221	Maximal Square	code
300	Longest Increasing Subsequence	code
787	Cheapest Flights Within K Stops	code
918	Maximum Sum Circular Subarray	code
1584	Min Cost to Connect All Points	code

🔴 Hard (5)

#	Title	Solution
23	Merge k Sorted Lists	code
42	Trapping Rain Water	code
329	Longest Increasing Path in a Matrix	code
1235	Maximum Profit in Job Scheduling	code
1751	Maximum Number of Events That Can Be Attended II	code