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

L4

Problem

Given a list of integers and integer k, find all unique triplets of distinct indices whose values sum to k. Each triplet value list is sorted ascending. Return the list of triplets sorted lexicographically. Do not return duplicate value triplets.

Summary

Three numbers, one target.

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