14 Leetcode Patterns

Problems pattern frequency DFS 30 Dynamic Programming 21 Backtracking 20 Heap 17 Arrays 15 Binary Search 14 BFS 14 Two Pointers 13 Sliding Window 11 Fast amp Slow Pointers 10 Trie 10 Greedy 9 Graph 8 In-place reversal of a linked list 6 Intervals 6 Topological Sort 6 Bit Manipulation 3 Union Find 3 Design 2

Instead of spending time solving different coding problems or job interview questions, you should learn the underlying patterns behind each question. These are the top 14 patterns you can use to solve nearly every coding interview question. Check out this cheat sheet to know how to identify each pattern and some typical coding interview

The LeetCode patterns cheat sheet is a curated list of 14 problem-solving strategies that recur across coding challenges.These patterns help you recognize similarities between problems, reducing prep time and boosting accuracy. Popularized by resources like Tech Interview Handbook, it's a must-have for structured learning.. 1.

Each LeetCode pattern comes with its own rules, choices, and good ways of doing things, giving developers a toolbox they can use to solve many different coding problems. Also, mastering these patterns helps developers think in abstract ways and recognize patterns so they can map similar strategies for new problems they face during interviews.

14 Patterns for leetcode. Flashcards. Learn. Test. Blocks. Match. Get a hint. What is the sliding window pattern-used to perform a required operation on a specific window size of a given array or linked list-start from the 1st element and keep shifting right by one element and adjust the length of the window according to the problem that you

Remember, every expert was once a beginner! Start simple and build your confidence. Why not begin with LeetCode Problem 2235 - it's a perfect warm-up that will get you in the coding mindset. You've got this! . 2025-06-03 2024-08-18

Experiencing LeetCode fatigue? Learn these 14 patterns and you'll have a more complete picture of how to approach a problem no matter the question. If you're interested in a deeper dive through the above patterns or the example problems under each one, check out Grokking Coding Interview Patterns in Java. It's the latest course in the

Having solved more than 1500 LeetCode problems, if there is one thing I have learned, it's this. LeetCode is less about the number of problems you have solved and more about how many patterns you know.. Learning patterns enables you to solve a wide variety of problems in lesser time and helps you quickly identify the right approach to a problem you have never seen before.

This list is heavily inspired from Grokking the Coding Interview with additional problems extracted from the Blind 75 list and this hackernoon article on 14 patterns to ace any coding interview question.

The only 14 patterns you'll ever need to master LeetCode Interviews! Instead of memorizing hundreds of LeetCode questions and answers, learn generalized patterns to solve any question. Today, I