Dynamic Programming: From Memoization to Optimal Solutions
Master dynamic programming fundamentals including memoization, tabulation, and how to identify DP subproblems.
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Edit Distance: Transforming One String to Another
Solve the minimum edit distance problem using dynamic programming with applications in spell checking, DNA alignment, and autocomplete.
FAANG Coding Interview Preparation Guide
Strategic approach to preparing for technical interviews at top tech companies including Amazon, Google, Microsoft, and Meta.
Fenwick Trees: Binary Indexed Trees
Master Fenwick trees (binary indexed trees) for O(log n) prefix sum queries and point updates. Learn the elegant bit-trick implementation and when to choose BIT over segment trees.
Floyd-Warshall Algorithm: All-Pairs Shortest Paths
Master the Floyd-Warshall algorithm for finding shortest paths between all pairs of vertices in weighted graphs, with implementation examples and trade-offs.
Graphs: Adjacency List, Matrix, and Core Algorithms
Master graph representations (adjacency list and matrix), BFS, DFS, and when to use each representation.
Greedy Algorithms: Making Locally Optimal Choices
Learn when greedy algorithms work, how to prove correctness using exchange arguments, and common greedy patterns.
Hash Sets and Hash Maps: O(1) Average-Case Lookups
Learn hash table fundamentals, collision handling, load factors, and practical uses of hash sets and maps, with trade-offs for real workloads.
Heaps: Min-Heaps, Max-Heaps, and Priority Queues
Master heap data structure, heap operations, priority queue implementation, and heap sort with binary and Fibonacci heap variants.
Individual Sorting Algorithms: Bubble, Selection, Insertion, Merge, Quick, Heap
Deep dive into each major sorting algorithm with implementations, complexity analysis, and when to use each.