Learn Java Data Structures and Algorithms
// Kaufman-style skill map untuk mempelajari Java Data Structures and Algorithms secara efektif, deliberate, dan production-oriented tanpa terjebak template hafalan.
This overview is designed to help you choose the right entry point quickly. Follow the full track from lesson one, continue from your last checkpoint, or jump straight into a phase that matches what you need right now.
Curriculum Map
Navigate by phase, then choose the lesson that matches your current depth.
Kaufman Skill Map
13 minKaufman-style skill map untuk mempelajari Java Data Structures and Algorithms secara efektif, deliberate, dan production-oriented tanpa terjebak template hafalan.
Complexity as an Engineering Contract
17 minBig-O, amortized analysis, lower bounds, constant factors, and Java-specific cost model sebagai kontrak engineering untuk memilih struktur data dan algoritma.
Java Memory Model for Data Structures
17 minBuild a practical Java memory cost model for data structures: object layout, references, locality, allocation pressure, GC impact, primitive arrays, boxed values, and representation trade-offs.
Benchmarking, Profiling, and Measurement
16 minLearn how to measure Java data structure and algorithm performance correctly using JMH, profiling, JFR, GC observation, workload design, and engineering-grade experiment discipline.
Arrays, Dynamic Arrays, and Ring Buffers
12 minArrays, dynamic arrays, and ring buffers as contiguous-storage primitives for building high-performance data structures in Java.
Linked Structures and Allocation Costs
12 minLinked structures, node-based representations, and allocation costs in Java, including when linked lists are useful and when they are misleading.
Stacks, Queues, and Deques
12 minStack, queue, dan deque sebagai disiplin akses state; invariants, Java API, ArrayDeque, monotonic stack/queue, BFS frontier, bounded queue, dan failure mode produksi.
Hash Tables from First Principles
11 minHash table dari first principles: hashing, collision, chaining, open addressing, load factor, resizing, distribution, adversarial keys, dan cost model Java.
HashMap, HashSet, and Key Contracts
13 minKontrak kunci Java untuk struktur hash: equals, hashCode, mutability, HashMap, HashSet, LinkedHashMap, EnumMap, WeakHashMap, dan failure mode produksi.
Comparison Sorting Deep Dive
12 minSorting berbasis comparison secara mendalam: lower bound, stability, quicksort, mergesort, heapsort, TimSort, comparator correctness, dan pilihan sorting production di Java.
Non-Comparison Sorting, Selection, and Ranking
17 minSorting non-comparison, selection, ranking, top-k, order statistics, dan cara memilih algoritma saat full comparison sort terlalu mahal atau tidak perlu.
Binary Search as an Invariant Machine
11 minBinary search sebagai mesin invariant: lower bound, upper bound, predicate search, answer-space search, floating search, insertion point, dan bug boundary di Java.
Prefix, Difference, and Fenwick Trees
15 minPrefix sums, difference arrays, 2D prefix, Fenwick trees, range update/query transformations, invariants, Java implementation, and production trade-offs.
Segment Trees, Sparse Tables, and Range Query Systems
13 minSegment trees, lazy propagation, sparse tables, range-query algebra, Java implementations, correctness invariants, and production decision rules.
Binary Trees and Traversal Invariants
13 minBinary tree representation, traversal state machines, DFS/BFS invariants, serialization, path algorithms, Java implementation choices, correctness reasoning, and production failure modes.
Binary Search Trees and Ordered Indexes
11 minBinary search tree invariants, ordered index operations, deletion, floor and ceiling, range scans, comparator contracts, TreeMap and TreeSet usage, validation, and Java production design.
Balanced Trees: Red-Black, AVL, and B-Trees
16 minBalanced tree invariants, rotations, AVL trees, red-black trees, B-trees, B+ trees, TreeMap implications, and how ordered indexes stay logarithmic under real workloads.
Heaps, Priority Queues, and Schedulers
15 minHeap invariants, binary heaps, d-ary heaps, Java PriorityQueue, priority updates, lazy deletion, schedulers, top-k, streaming median, and production failure modes.
Disjoint Set Union and Connectivity
13 minDisjoint Set Union sebagai struktur data untuk memodelkan konektivitas, equivalence class, union by size/rank, path compression, Kruskal, dan dynamic connectivity offline.