LeetCode Interval Problems: Merge, Insert, and Schedule
Master interval problems on LeetCode: sorting, merging, inserting, and scheduling with templates, visual walkthroughs, and complexity analysis.
·6 min read · #leetcode#intervals#algorithms
#algorithms
13 posts · page 1 of 1
LeetCode Two Pointer Patterns: The Complete Guide
Master every two pointer pattern for LeetCode: opposite-end, same-direction, and fast/slow pointers with templates, complexity analysis, and 15+ mapped problems.
·7 min read · #leetcode#two-pointers#algorithms
Randomized Algorithms: QuickSelect, Reservoir Sampling, and Beyond
Explore randomized algorithms -- QuickSelect for O(n) kth element, reservoir sampling for streams, randomized quicksort, skip lists, bloom filters, and Monte Carlo vs Las Vegas classification.
·14 min read · #dsa#algorithms#advanced
Backtracking Patterns: Permutations, Combinations, Subsets, and Constraints
Master backtracking with reusable templates for permutations, combinations, subsets, and constraint satisfaction problems on LeetCode.
·7 min read · #leetcode#backtracking#recursion
Binary Search Patterns: Search Space, Boundaries, and Rotated Arrays
Master binary search patterns for LeetCode including search space reduction, boundary finding, rotated array search, and practical templates.
·8 min read · #leetcode#binary-search#algorithms
Dynamic Programming Patterns: 1D, 2D, Memoization, and Tabulation
Master dynamic programming with 1D and 2D patterns, memoization vs tabulation approaches, and solutions to classic LeetCode DP problems.
·9 min read · #leetcode#dynamic-programming#algorithms
Graph Traversal Patterns: BFS, DFS, Topological Sort, and Shortest Path
Master graph traversal patterns for LeetCode including BFS, DFS, topological sort, Dijkstra, and practical templates with solutions.
·7 min read · #leetcode#graphs#bfs
Greedy Algorithm Patterns: Interval Scheduling, Activity Selection, and More
Master greedy algorithm patterns for LeetCode including interval scheduling, activity selection, jump games, and proving greedy correctness.
·7 min read · #leetcode#greedy#intervals
Sliding Window Patterns: Fixed, Variable, and Two Pointer Variants
Master the sliding window technique with fixed and variable window patterns, two pointer variants, and reusable templates for solving LeetCode problems.
·8 min read · #leetcode#sliding-window#two-pointers
Tree Traversal Patterns: Inorder, Preorder, Postorder, Level-Order, and Morris
Master every tree traversal method with recursive, iterative, and Morris traversal implementations, plus classic LeetCode tree problems.
·7 min read · #leetcode#trees#traversal
Stack and Queue Patterns: Monotonic Stack, Min Stack, and Queue Tricks
Master stack and queue patterns for LeetCode including monotonic stacks, min stacks, queue implementations, and practical templates.
·8 min read · #leetcode#stack#queue
K-Nearest Neighbors Algorithm Explained
Understand how the k-nearest neighbors algorithm classifies and regresses by looking at similar examples, when it works well, and how to tune k and distance metrics for real problems.
·4 min read · #machine learning#knn#classification
String Pattern Matching: Naive, KMP, and Rabin-Karp
A practical tour of substring search — the naive O(n·m) scan, the KMP algorithm with its LPS array, and the Rabin-Karp rolling hash. Worked examples, code, and intuition for when to use each.
·8 min read · #dsa#strings#intermediate