Hone your computer science fundamentals by implementing important data structures and algorithms from scratch and practice the questions where algorithmic efficiency is key.
StackImplement a stack data structure containing the common stack methods
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Insertion SortImplement a function that performs an insertion sort
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Binary SearchImplement a function that performs binary search on an array of numbers
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Breadth-first SearchImplement a breadth-first search algorithm that traverses a directed graph in a breadth-first manner
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Depth-first SearchImplement a depth-first search algorithm that traverses a directed graph in a depth-first manner
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Heap SortImplement a function that performs a heap sort
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QueueImplement a queue data structure containing the common queue methods
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Event EmitterImplement a class that can subscribe to and emit events that trigger attached callback functions
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Merge SortImplement a function that performs a recursive merge sort
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Quick SortImplement a function that performs a recursive quick sort
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Topological SortImplement a function that performs a topological sort
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Unique ArrayPremiumImplement a function to remove all duplicate values from an array
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Selection SortPremiumImplement a function that performs a selection sort
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Data MergingPremiumImplement a function to merge rows of data from the same user
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Event Emitter IIPremiumImplement a class that can subscribe to and emit events that trigger attached callback functions. Subscription objects are returned and can unsubscribe itself
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Transfer ListPremiumBuild a component that allows transferring of items between two lists
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Undoable CounterPremiumBuild a counter with a history of the values and ability to undo/redo actions
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Backbone ModelPremiumImplement a class resembling Backbone.Model which allows storing of attributes/values and responding to changes in specific attribute values
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Data SelectionPremiumImplement a function to filter rows of data matching a specified requirement
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Table of ContentsPremiumImplement a function to construct a table of contents from an HTML document
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HTMLJSTS
Transfer List IIPremiumBuild a component that allows transferring of items between two lists, bulk selection/unselection of items, and adding of new items
Available frameworks
WordlePremiumBuild Wordle, the word-guessing game that took the world by storm