Leetflix — LeetCode solutions, algorithm visualizations, interview prep

Practice LeetCode and coding interviews with the full problem catalogue, explained Python and Go solutions, and step-by-step algorithm animations. The catalogue has 4060 LeetCode problems (966 Easy, 2117 Medium, 977 Hard) with 3276 free animated walkthroughs in Python and Go. 784 locked Premium problems stay on LeetCode.

• two-sum
• add-two-numbers
• trapping-rain-water
• valid-parentheses
• number-of-islands
• longest-substring-without-repeating-characters

Does Leetflix cover every LeetCode problem?

Yes — the catalogue lists every public LeetCode problem. Every free row opens an animated Python and Go walkthrough. Locked (Premium) problems stay listed and deep-link to LeetCode.

How does this help with coding interviews?

You practice the same data-structure and algorithm patterns asked in software-engineer interviews — arrays, hashing, two pointers, trees, graphs, dynamic programming — with a visual walkthrough so the invariant is obvious before you write it on a whiteboard.

How are the solutions explained?

Each deep-dive has a written problem statement, worked examples, a well-explained Python and Go implementation, and an interactive walkthrough. You edit the input, press Run, and step the algorithm one instruction at a time.

What is the difference versus reading an editorial?

The catch is motion. Data structures light up as the code runs — arrays, hash maps, stacks, linked lists, grids — so you see why an invariant holds, not just that the answer is correct.

Which languages are the solutions in?

Python and Go on every deep-dive. The language toggle is site-wide, so the static solution and the animation stay in the same language.

Is Leetflix free?

Yes. It is a static site. No account, no paywall. Official problem statements remain on LeetCode; we teach the algorithm.