Coding Patterns
Learn the twelve shapes that solve the thousand.
Pattern-first guides for sliding window, two pointers, monotonic stack, BFS/DFS, dynamic programming, backtracking, and more. Maps directly to Blind 75 and NeetCode 150 problem sets.
- blind 75
- leetcode 75
- neetcode 150
- coding patterns
- leetcode dynamic programming
- leetcode backtracking
- leetcode bfs
- leetcode dfs
- leetcode trie
Binary Search on the Answer Space (Not Just Sorted Arrays)
Feasibility functions, monotonic predicates, and the interviews that hide binary search in plain sight.
- binary search leetcode
- binary search on answer
- leetcode binary search
Dynamic Programming Without Panic: Recurrence First, Table Second
Interviewers want the story of subproblems — not a memorized grid shape.
- leetcode dynamic programming
- dp patterns
- coding interview dp
Backtracking and Combinatorial Search: Prune Early, Explain Clearly
Permutations, subsets, and boards — with templates that keep time complexity honest.
- leetcode backtracking
- combinatorial interview
- subset generation
Two Pointers for Sorted Arrays, Linked Lists, and Palindrome Checks
Know when convergence beats scanning — and how to justify your pointer rules out loud.
- two pointers
- leetcode two pointers
- interview algorithm
- array two pointers
Heaps, Priority Queues, and Top-K: Interview Patterns That Scale
Min-heap vs max-heap mental math — and when a heap is the wrong tool.
- leetcode heap
- priority queue interview
- top k elements
Beyond the Blind 75: A Pattern Atlas for 2026 Algorithm Interviews
Curated lists help — if you treat them as maps of invariants, not a memorization sprint.
- blind 75
- leetcode 75
- neetcode 150
- coding patterns
Graph Interviews: BFS Layers, DFS Stacks, and When to Switch
Connectivity, ordering, and shortest steps — with the clarifying questions that save twenty minutes.
- leetcode bfs
- leetcode dfs
- graph interview
- topological sort interview
Sliding Window Mastery: Variable, Fixed, and Frequency Maps Under Pressure
Turn O(n²) scans into linear passes by naming the invariant before you write the loop.
- sliding window
- leetcode patterns
- two pointers
- array interview
The 12 Coding Interview Patterns That Replace 3,000 LeetCode Problems
If you can recognize the shape of a problem in 90 seconds, you can solve it in 20 minutes. Here's the catalog top loops actually test against.
- coding interview patterns
- leetcode patterns
- blind 75
- neetcode 150
Stop grinding. Start patterning.
Patterns-first interview prep — coding, design, behavioral, mocks, ML/AI in one $19/mo subscription.