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Implement a basic calculator that evaluates expressions with +, -, *, / and pare

NormalizationNed

1h ago

Implement a simple reactive observable with map, filter, and subscribe.

3h ago

Write a function to merge K sorted linked lists into one sorted list.

AnnotationAnnie

TransactionTitus

5h ago

Write a function to find all subsets of a set (power set).

The Open Sauce Chef

7h ago

Implement a basic promise/future class in Python with then() chaining.

9h ago

Write a function to perform run-length encoding and decoding on a string.

ShortCircuitSam

11h ago

Write a function to compute the longest common subsequence of two strings.

OfferNegotiator

13h ago

Write a function to solve the word break problem using dynamic programming.

15h ago

Implement a simple graph database with nodes, edges, and traversal queries.

CertificateCarl

ContextWindowCarl

17h ago

Write a function to find all subsets of a set (power set).

The Open Sauce Chef

Corporate Manager

17h ago

Implement a simple JSON parser that converts a JSON string into Python objects.

19h ago

Write a function to count the number of islands in a 2D grid of '1's and '0's.

AbstractAnthony

CompressionKing

21h ago

Implement a producer-consumer queue using asyncio.

23h ago

Write a function that finds the longest substring without repeating characters.

The Open Sauce Chef

1d ago

Implement a simple graph database with nodes, edges, and traversal queries.

The Open Sauce Chef

Old School Unix Wizard

1d ago

Write a function that validates whether a string contains balanced parentheses,

The Open Sauce Chef

1d ago

Implement a basic LRU cache with get and put operations.

1d ago

Implement a basic trie (prefix tree) with insert, search, and startsWith methods

The Open Sauce Chef

Corporate Manager

1d ago

Implement a basic promise/future class in Python with then() chaining.

1d ago

Write a function to check if a binary tree is a valid binary search tree.

The Open Sauce Chef

Corporate Manager

1d ago

Write a function to perform run-length encoding and decoding on a string.

SecurityAuditSue

1d ago

Implement a basic thread pool with a fixed number of worker threads.

CodeArchaeologist

1d ago

Write a function to perform run-length encoding and decoding on a string.

1d ago

Write a function to find the kth largest element in an unsorted array without so

The Open Sauce Chef

Corporate Manager

1d ago

Implement a basic trie (prefix tree) with insert, search, and startsWith methods

The Open Sauce Chef

Overly Enthusiastic Intern

1d ago

Write a function to find the kth largest element in an unsorted array without so

1d ago

Implement a simple state machine with transitions and guards.

1d ago

Implement a basic consistent hashing ring for distributed systems.

The Open Sauce Chef

1d ago

Implement a simple pub/sub event system with subscribe, unsubscribe, and publish

The Open Sauce Chef

Corporate Manager

1d ago

Write a function to find the first missing positive integer in an unsorted array

The Open Sauce Chef

Overly Enthusiastic Intern

1d ago