Postman Coding Interview Questions
32 Postman coding interview problems with full optimal solutions — 10 easy, 17 medium, 5 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an Postman interviewer values, and a FAQ section.
Showing 1 problem of 32
- #14mediumsometimes
14. 3Sum
3Sum asks for every unique triplet in an integer array that sums to zero — the canonical sort-plus-two-pointer problem and one of the most-reported medium screens in the industry. Postman candidates describe it as a test of duplicate discipline: anyone can find triplets, but cleanly skipping repeats at all three positions without a Set crutch is what separates a pass from a 'mostly worked'.