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The Triple Alliance

A hard Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain
Python
Difficulty
hard
Seniority
mid, senior

Problem

Given a list of integers and a target value k, return all unique triplets - groups of three distinct indices - whose values sum exactly to k. No triplet should be repeated, and the order of triplets in the output does not matter.

Practice This Problem

Solve this Python problem with real code execution. DataDriven runs your Python code in a sandboxed Docker environment and grades it instantly.