Data Structures & Algorithms Roadmap
A structured, step-by-step master path from fundamental arrays to advanced dynamic programming and graph theory. Click any topic to jump directly to its curated LeetCode problem set.
Level 1: Foundations & Linear Data Structures
Master programming basics, asymptotic time & space complexity, two-pointer traversals, sliding window techniques, and binary search fundamentals.
Time & Space Complexity
CriticalArrays & Dynamic Arrays
CriticalStrings
CriticalHash Table & Hashing
CriticalTwo Pointers Technique
HighSliding Window
HighSearching & Sorting
HighBinary Search
CriticalLevel 2: Non-Linear & Classic Problem Solving
Master 2D matrices, linked list pointers, LIFO/FIFO stacks and queues, recursive exploration, backtracking search, and heap priority queues.
2D Arrays & Matrix
MediumLinked Lists
HighStack & Monotonic Stack
HighQueue & Deque
MediumRecursion & Backtracking
HighHeaps & Priority Queue
HighGreedy Algorithms
HighDivide and Conquer
MediumLevel 3: Trees, Graphs & Dynamic Programming
Master hierarchical binary trees, graph traversals (BFS/DFS), topological ordering, shortest path algorithms, and multidimensional dynamic programming.
Binary Trees
CriticalBinary Search Tree (BST)
MediumGraphs (BFS & DFS)
CriticalTopological Sort
MediumShortest Path Algorithms
MediumDynamic Programming
Critical2D DP & Subsequences
HighLevel 4: Advanced Data Structures & Master Algorithms
Specialized data structures and contest Q4 paradigms: Disjoint Set Union (DSU), Trie prefix trees, Bit Manipulation, Segment Trees, Number Theory, and Combinatorics.
Disjoint Set Union (DSU)
MediumBit Manipulation
MediumTrie (Prefix Tree)
MediumSegment Tree & Fenwick Tree
BonusMath & Number Theory
MediumCombinatorics & Game Theory
BonusAdvanced Dynamic Programming
BonusFrequently Asked Questions
How is this DSA Roadmap structured?
The roadmap follows a natural difficulty progression divided into 4 tiers: Level 1 (Foundations & Linear Structures), Level 2 (Non-Linear Structures & Problem Solving), Level 3 (Trees, Graphs & Dynamic Programming), and Level 4 (Advanced Data Structures & Master Algorithms). You can follow it linearly or focus on specific weak spots.
What happens when I click on a roadmap item?
Clicking any node in the list instantly opens the official LeetCode problem list for that topic (e.g. Dynamic Programming redirects to https://leetcode.com/problem-list/dynamic-programming) in a new tab so you can start solving right away.