ByteDance Coding Interview Questions
25 ByteDance coding interview problems with full optimal solutions — 10 easy, 11 medium, 4 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an ByteDance interviewer values, and a FAQ section.
Showing 4 problems of 25
- #22hardfoundational
22. Median of Two Sorted Arrays
Find the median of two sorted arrays in logarithmic time — ByteDance uses it to test binary-search-on-answer reasoning that mirrors quantile estimation in their ranking pipeline.
- #23hardfoundational
23. Trapping Rain Water
Compute the volume of rainwater trapped between bars of varying heights — ByteDance uses it to test two-pointer DP and bottleneck-thinking under pressure.
- #24hardfoundational
24. Merge k Sorted Lists
Merge k sorted linked lists into one sorted list — ByteDance uses it as a direct stand-in for merging k partitioned ranking streams into a single feed.
- #25hardfoundational
25. Sliding Window Maximum
Return the maximum of every sliding window of size k — ByteDance uses it because it mirrors how their ranking engine summarizes engagement signals over rolling windows.