Vercel Coding Interview Questions
100 Vercel coding interview problems with full optimal solutions — 30 easy, 64 medium, 6 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an Vercel interviewer values, and a FAQ section.
Showing 3 problems of 100
- #97hardfrequently asked
97. Merge k Sorted Lists
Merge k sorted linked lists into one. Vercel asks this constantly — they literally merge k sorted log streams from edge POPs in their analytics pipeline, and the heap-based merge is the production solution.
- #99hardfrequently asked
99. Trapping Rain Water
Compute how much rain water can be trapped after raining on an elevation map. Vercel asks this for the two-pointer 'water = min(maxLeft, maxRight) - height' insight — same shape as their bandwidth utilization calculation across uneven edge capacities.
- #100hardfrequently asked
100. Minimum Window Substring
Find the smallest substring of s containing all characters of t. Vercel asks this for the sliding-window-with-counter-map pattern — same shape as their 'find the smallest contiguous region that covers all required edge nodes' optimizer.