Leetcode Cheat Sheet

Learn how to use 14 problem-solving strategies to tackle coding challenges faster and with confidence. This guide covers Two Pointers, Sliding Window, BFSDFS, Dynamic Programming and more.

LEETCODE CHEAT SHEET Big-O notations indicate the algorithm's general time complexity n indicates the total number of elements in the input Maximum Continuous Subarray - Sliding Window O n Input Array is Sorted - Binary Search O log n - Two Pointers O n Input is a Binary Tree - DFS Preorder, Inorder, Postorder O n - BFS Level

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Download LeetCode PDFs on DSA topics, 75-day challenges, patterns, and top 100 interview questions. Perfect for FAANG prep, placements.

If you're preparing for a tech interview, you've probably realized that solving random LeetCode problems isn't enough. Patterns matter. After practicing and analyzing tons of problems, I've found that most coding challenges fall into these 17 core patterns. Here's a comprehensive guide to each pattern, along with relevant LeetCode problems to practice.

A comprehensive collection of Java code snippets and tips for common interview questions and problems. Learn how to use String, StringBuilder, array, HashMap, HashSet, TreeMap, TreeSet, and more data structures and methods.

Find cheatsheets for time complexities, data structures, algorithms, coding interview stages, and code templates. All cheatsheets are based on LeetCode's official course for coding interviews.

A comprehensive cheatsheet for LeetCode problems, covering Big O notation, data structure operations, time and space complexity, and common sorting and graph algorithms. Includes code examples, pseudocode, and links to more resources.

A categorized list of LeetCode problems and solutions in Python, with problem-solving techniques and links. Use this cheat sheet as a quick reference for different problem types and corresponding LeetCode problems.

Cheat sheet!. quotCommon LeetCode Coding Patternsquot is published by Abhinaya Rangarajan.