Typorithm learning path
Algorithms
Sorting, search, and dynamic programming — typing, recall, mistakes, and review.
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Unit 1 · 15 topics · interactive labs
Sorting Algorithms
Practice the core sorting patterns used to understand loops, swaps, shifting, and time complexity.
Bubble Sort
easy · 36 activities
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Selection Sort
easy · 36 activities
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Insertion Sort
easy · 36 activities
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Merge Sort
medium · 38 activities
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Quick Sort
medium · 9 activities
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Heap Sort
hard · 9 activities
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Counting Sort
medium · 9 activities
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Radix Sort
hard · 9 activities
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Shell Sort
medium · 9 activities
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Bucket Sort
hard · 9 activities
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Cocktail Shaker Sort
medium · 9 activities
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Comb Sort
medium · 9 activities
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Gnome Sort
easy · 9 activities
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Cycle Sort
hard · 9 activities
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Pancake Sort
medium · 9 activities
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Unit 2 · 15 topics · interactive labs
Search Algorithms
Practice array, hash table, tree, graph, and string search patterns in JavaScript.
Linear Search
easy · 9 activities
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Binary Search
medium · 9 activities
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Jump Search
medium · 9 activities
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Interpolation Search
hard · 9 activities
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Exponential Search
medium · 9 activities
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Ternary Search
medium · 9 activities
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Fibonacci Search
hard · 9 activities
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Lower Bound / First Match Search
medium · 9 activities
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Hash Table Lookup
easy · 9 activities
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Binary Search Tree Search
medium · 9 activities
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Breadth-First Search
medium · 9 activities
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Depth-First Search
medium · 9 activities
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A* Search
hard · 9 activities
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Naive String Search
easy · 9 activities
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KMP String Search
hard · 9 activities
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Unit 3 · 15 topics · interactive labs
Dynamic Programming
Practice DP state definitions, base cases, transitions, and table compression.
Fibonacci DP
easy · 9 activities
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Climbing Stairs
easy · 9 activities
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Min Cost Climbing Stairs
easy · 9 activities
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House Robber
medium · 9 activities
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Coin Change
medium · 9 activities
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0/1 Knapsack
medium · 9 activities
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Longest Increasing Subsequence
medium · 9 activities
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Longest Common Subsequence
medium · 9 activities
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Edit Distance
hard · 9 activities
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Unique Paths
medium · 9 activities
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Minimum Path Sum
medium · 9 activities
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Decode Ways
medium · 9 activities
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Word Break
medium · 9 activities
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Maximum Subarray
easy · 9 activities
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Partition Equal Subset Sum
medium · 9 activities
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Unit 4 · 8 topics · interactive labs
Greedy
Make a locally optimal choice at each step — sorting, farthest reach, and exchange arguments.
Interval Scheduling
medium · 9 activities
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Jump Game
medium · 9 activities
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Jump Game II
hard · 9 activities
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Gas Station
medium · 9 activities
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Assign Cookies
easy · 9 activities
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Partition Labels
medium · 9 activities
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Fractional Knapsack
medium · 9 activities
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Task Scheduler
medium · 9 activities
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Unit 5 · 10 topics · interactive labs
Backtracking
Choose, explore, and undo — enumerate subsets, permutations, and constrained arrangements.
Subsets
medium · 9 activities
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Permutations
medium · 9 activities
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Combinations
medium · 9 activities
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Combination Sum
medium · 9 activities
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Generate Parentheses
medium · 9 activities
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Word Search
medium · 9 activities
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N-Queens
hard · 9 activities
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Palindrome Partitioning
medium · 9 activities
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Sudoku Solver
hard · 9 activities
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Letter Combinations
medium · 9 activities
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Unit 6 · 11 topics · interactive labs
Graph Algorithms
Traverse and order graphs — BFS, DFS, topological sort, and connectivity.
Graph BFS
medium · 9 activities
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Graph DFS
medium · 9 activities
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Topological Sort
medium · 9 activities
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Connected Components
medium · 9 activities
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Cycle Detection
medium · 9 activities
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Dijkstra
hard · 9 activities
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Bellman-Ford
hard · 9 activities
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Bipartite Check
medium · 9 activities
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Kruskal's MST
medium · 9 activities
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Prim's MST
medium · 9 activities
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Floyd-Warshall
medium · 9 activities
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Unit 7 · 6 topics · interactive labs
Divide & Conquer
Split a problem, solve the parts, and combine — selection, fast power, and merge tricks.
Quick Select
medium · 9 activities
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Fast Power
medium · 9 activities
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Count Inversions
hard · 9 activities
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Majority Element
medium · 9 activities
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Max Subarray (D&C)
medium · 9 activities
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Closest Pair of Points
hard · 9 activities
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Unit 8 · 6 topics · interactive labs
Math & Number Theory
GCD, sieves, prime factorization, and modular arithmetic for number problems.
GCD (Euclid)
easy · 9 activities
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Sieve of Eratosthenes
medium · 9 activities
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Prime Factorization
medium · 9 activities
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Modular Exponentiation
medium · 9 activities
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Modular Inverse
medium · 9 activities
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Combinations nCr
medium · 9 activities
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Unit 9 · 5 topics · interactive labs
Bit Manipulation
XOR tricks, masks, and bit counting — single number, power of two, and bitmask subsets.
Unit 10 · 4 topics · interactive labs
String Algorithms
Rolling hashes and prefix structure — Rabin-Karp, Z-function, hashing, and palindromes.