3sum Interview Questions
2 interview questions in our bank cover 3sum, most of them Coding & Leetcode-style Questions. They average 3.0/5 difficulty — medium — and each one was reported by a candidate after a real interview. Companies known to ask about 3sum: Visa, Meta.
Practice these on the problems board →Companies that ask about 3sum
Question mix
- Coding & Leetcode-style Questions2
Difficulty
- 3/5 — medium2
Questions tagged 3sum
Find All Unique Triplets Summing to Zero in Array
3/5Recapped from a Visa coding assessment, this popular algorithmic challenge asks you to discover all distinct combinations of three numbers within an integer collection that add up to zero. The task tests your mastery of sorting strategies, two-pointer techniques, and duplicate elimination in numeric arrays. You will need to design an efficient routine that avoids redundant configurations while scanning the dataset. Unlock the full challenge details and clean model implementation by obtaining a subscription.
Coding & Leetcode-style QuestionsVisaAI Coding: Card Game — Three Cards Summing to 15
3/5Tackle this Meta interview puzzle involving a card-matching game where you must systematically discover combinations that add up to a target sum. You will progress through multiple implementation tiers, ranging from debugging initial draw mechanics to engineering efficient scoring algorithms and optimizing iterative subset selections under strict constraints. This exercise evaluates your proficiency with debugging asynchronous workflows, combinatorial logic, and clean code refactoring. Access to the full problem description, test harnesses, and model solution requires a subscription.
Coding & Leetcode-style QuestionsMeta
3sum interview FAQ
- How many 3sum interview questions are there?
- 2 reported questions, mostly Coding & Leetcode-style Questions.
- Which companies ask 3sum questions?
- Visa (1), Meta (1).
- How hard are 3sum questions?
- They average 3.0 out of 5: 2 at 3/5.