Algorithms

Big O Notation

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Time Complexity

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Space Complexity

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Recursion Basics

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Recursion vs Iteration

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Linear Search

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Binary Search

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Bubble Sort

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Selection Sort

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Insertion Sort

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Merge Sort

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Quick Sort

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Heap Sort

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Counting Sort

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Two Pointers

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Sliding Window

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Prefix Sum

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Hash Map Patterns

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Stack Applications

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Queue Applications

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Linked List Traversal

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Reverse Linked List

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Detect Cycle

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Merge Sorted Lists

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Binary Tree Traversal

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BST Operations

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Tree Height and Balance

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Graph Representation

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BFS Graph

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DFS Graph

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Topological Sort

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Dijkstra Intro

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Union Find

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Backtracking Intro

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N-Queens Pattern

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Subset Generation

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Permutations

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Dynamic Programming Intro

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Fibonacci DP

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Knapsack 0-1

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Longest Common Subsequence

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Edit Distance

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Coin Change

Learn Coin Change with examples, patterns, and practice exercises.

Greedy Algorithms

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Interval Scheduling

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Binary Search on Answer

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Monotonic Stack

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Monotonic Queue

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Trie Data Structure

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String Matching

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KMP Overview

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Palindrome Techniques

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Anagram Groups

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Bit Manipulation

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XOR Tricks

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Math GCD LCM

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Prime Sieve

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Modular Arithmetic

Learn Modular Arithmetic with examples, patterns, and practice exercises.