ByteDance Interview Questions and Guide

Fast algorithm problem solving (LeetCode Medium to Hard), high-concurrency feeds, and real-time recommendation infra.

The ByteDance interview loop

1. Online assessment / HR screen
2. 2–3 technical video screens (coding & algorithms)
3. Onsite: coding, high-concurrency system design, and behavioral / team match

ByteDance interview questions

• Design a News Feed
• Design Top-K Trending Videos
• Design Instagram
• Design TikTok (For You Feed)
• Design a Flash Sale System
• Design Facebook Live Comments
• Design Distributed Counters
• Design Sora (Text-to-Video)
• Longest Substring Without Repeating Characters
• Trapping Rain Water
• Spiral Matrix
• Text Justification
• Rotate Array
• Fruit Into Baskets
• Maximum Points You Can Obtain from Cards
• Longest Substring with At Least K Repeating Characters
• Shortest Unsorted Continuous Subarray
• Longest Substring with At Most K Distinct Characters
• Longest Mountain in Array
• Product of the Last K Numbers
• Implement an LRU Cache
• Subarray Sums Divisible by K
• Design HashMap
• Count Number of Nice Subarrays
• Find All Duplicates in an Array
• Reverse Nodes in k-Group
• Decode String
• Longest Valid Parentheses
• Remove Duplicate Letters
• Number of Visible People in a Queue
• Basic Calculator III
• Max Stack
• Maximum Width Ramp
• Snakes and Ladders
• Shortest Distance from All Buildings
• Top K Frequent Elements
• Process Tasks Using Servers
• Path Sum III
• Recover Binary Search Tree
• Maximum Sum BST in Binary Tree
• Possible Bipartition
• Number of Distinct Islands
• Shortest Bridge
• Reorder Routes to Make All Paths Lead to the City Zero
• Parallel Courses
• Best Time to Buy and Sell Stock with Transaction Fee
• Combination Sum IV
• Number of Longest Increasing Subsequence
• Frog Jump
• Delete and Earn
• Partition Array for Maximum Sum
• Restore IP Addresses
• Subsets
• Remove Invalid Parentheses
• 24 Game
• Maximum Swap
• Data Stream as Disjoint Intervals
• Compare Version Numbers
• Tell me about a time you delivered despite a major setback
• Tell me about a time you shipped fast and iterated