coding
Medium
Verified
Largest Island Perimeter
Category: Grid/matrix coding problemYou are given an
m x n binary grid where each cell is either '1' (land) or '0' (water). A group of connected land cells (connected horizontally...Input: 2D gridOutput: Computed result
coding
Medium
Verified
Parallel Task Batching
Category: Graph coding problemA pipeline must execute a set of tasks with dependency constraints. Each dependency
[A, B] means task A must complete before task B can start....Input: Graph (nodes and edges)Output: Computed result
coding
Medium
Verified
Island Statistics
Category: Grid/matrix coding problemYou are given an
m x n binary grid where '1' is land and '0' is water. For each island (a connected group of land cells using horizontal and...Input: 2D gridOutput: Array
coding
Medium
Verified
Unfriended Pairs Counter
Category: Algorithm coding problemIn a social network of
n people labeled 0 to n - 1, friendship is mutual and transitive through direct connections. People belong to the same...Input: ListOutput: Computed result
coding
Hard
Verified
Expression Calculator
Category: String coding problemImplement a calculator that evaluates a mathematical expression given as a string
s. The expression may contain positive and negative integers, the...Input: StringOutput: Computed result
coding
Hard
Verified
Prime Subset Products
Category: Array coding problemGiven an array
primes where every element is a prime number (duplicates are allowed), find all distinct products that can be formed by multiplying...Input: ArrayOutput: Computed result
coding
Medium
Verified
Peak Attendance Finder
Category: Interval-based coding problemYou are organizing an event. Each attendee's presence is described by a half-open interval
[entry, exit), meaning they are present at every integer...Input: ListOutput: Integer
coding
Medium
Verified
Org Chart Builder
Category: String coding problemA company has a list of employees. Each entry has three strings:
[id, manager_id, name]. The CEO is the only employee whose manager_id equals...Input: ListOutput: Computed result
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