What Is the Blind 75?

Full Definition

The Blind 75 is a list of 75 LeetCode problems originally posted on Blind (the anonymous workplace community for tech employees) by a user known as 'yangshun'. The list covers the canonical interview patterns: Array (two-pointer, sliding window, prefix sum), String, Linked List, Tree (BFS, DFS, BST), Graph (BFS, DFS, topological sort), Dynamic Programming (1D, 2D), Greedy, Backtracking, Heap, and Trie. The selection criterion was 'minimum sufficient coverage' — drilling all 75 ensures the candidate has touched every common pattern at least once, with a representative problem per pattern. Blind 75 has become the standard minimum prep recommendation for coding interview preparation; NeetCode 150 (which extends Blind 75 to 150 problems) is its slightly larger counterpart. For a candidate with limited prep time, completing Blind 75 over 6-8 weeks (10-15 problems per week) is a reasonable target. Candidates with stronger DSA fundamentals can often complete it faster; those needing more practice can extend to NeetCode 150 or the LeetCode 'Top 100 Interview Questions' list for additional depth.