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Data Structures: JavaScript: Uncharted

Courses JavaScriptData Structures

Data Structures

Measure growing work, build linear and hashed structures by hand, and organize searchable trees for the operations a program needs.

JavaScript
Unit 18 of 20
20 lessons
190 min
420 XP

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Lessons

20 total

1Junk Drawer vs ToolboxConnect data organization choices to the work required to find an item.InteractiveConcept6 min20 XPOpen
2Counting StepsMatch constant, linear, and quadratic work to how their step counts grow.InteractiveConcept8 min20 XPOpen
3Measure It YourselfInstrument constant, linear, and quadratic functions with explicit step counters.CodeConcept10 min20 XPOpen
4The Instant LookupCompare a counted array scan with direct object-key access.CodeConcept9 min20 XPOpen
5Build a StackImplement last-in-first-out stack operations in a reusable class.CodeConcept10 min20 XPOpen
6Stacks at WorkUse a stack to model undo history in reverse action order.CodeConcept9 min20 XPOpen
7Matched BracketsUse a stack to validate nested bracket pairs.CodeConcept11 min20 XPOpen
8Build a QueueImplement first-in-first-out queue operations without Array shift.CodeConcept10 min20 XPOpen
9Queues at WorkSimulate print jobs in first-in-first-out order with exact output.CodeConcept9 min20 XPOpen
10Stack or Queue?Choose a stack or queue from the order a scenario requires.InteractiveConcept7 min20 XPOpen
11Links in a ChainBuild a singly linked list from nodes that point to their next neighbor.CodeConcept10 min20 XPOpen
12Walk the ChainTraverse a linked list to collect values and find a matching node.CodeConcept9 min20 XPOpen
13Splice the ChainInsert and delete linked-list nodes by rewiring neighboring references.CodeConcept11 min20 XPOpen
14Array or Chain?Compare indexed reads with linked-list insertion costs.InteractiveConcept7 min20 XPOpen
15Buckets by HandBuild a toy hash map that resolves collisions inside numbered buckets.CodeConcept12 min20 XPOpen
16Map and Set, For RealUse Set for deduplication and Map for counted key-value lookup.CodeConcept9 min20 XPOpen
17Grow a Search TreeInsert values into a binary search tree while preserving ordering invariants.CodeConcept11 min20 XPOpen
18Draw the TreeConstruct the binary search tree produced by a given insertion order.DiagramConcept10 min20 XPOpen
19Walk the Tree in OrderTraverse a binary search tree recursively to return values in sorted order.CodeConcept10 min20 XPOpen
20Data Structures Mastery CheckCombine hash lookup and tree ordering into a reusable numeric index.CodeMastery check12 min40 XPOpen

How JavaScript Runs Algorithms