FAANG Coding Interview Prep
A structured study plan covering the top 75 coding problems organized by pattern and difficulty. Master the most commonly asked problems at Google, Amazon, Meta, Apple, and Microsoft.
Double a Number Represented as a Linked List
LeetCode problem #2816
Arrays
Master array manipulation with fundamental problems covering searching, sorting, and advanced algorithms.
Graphs
Master graph traversal, shortest paths, and advanced graph algorithms.
Hash Tables
Master hash table usage for fast lookups, frequency counting, and deduplication.
Heaps
Master heap data structures and priority queue implementations.
Linked List Patterns: Two Pointers, O(n) In-Place
Learn linked list patterns (fast/slow pointers, reverse, merge) with optimal O(n) time & O(1) space. Prep for FAANG—practice now.
Stacks & Queues
Master stack and queue data structures with implementation and problem-solving techniques.
Strings
Master string manipulation with pattern matching, parsing, and advanced string algorithms.
Trees
Master tree traversal, manipulation, and advanced tree algorithms.
B-Trees vs LSM-Trees
Comparing write-optimized LSM-trees with read-optimized B-trees for database storage
Bloom Filters
A space-efficient probabilistic data structure that tests whether an element is a member of a set — with possible false positives but never false negatives