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ByteDance / TikTok Interview Question Bank
ByteDance / TikTok runs a strict one-round-at-a-time funnel with sharp org-by-org variance in bar, language, and round mix. Coding rounds skew toward classic LeetCode-medium with one self-built test case; MLE and SRE loops front-load 30+ minutes of oral 八股 before any code is written. Interviewer professionalism varies — strong candidates drive the round structurally rather than waiting to be assessed.
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OJ Problems
practice in the online judgeNumber of Islands with Large Map Follow-upMost Common Suffix / Longest Common Suffix QueriesShortest Path in a Grid with Obstacles EliminationFind Elements Appearing More Than One Third in a Sorted ArrayReverse Nodes in k-GroupReverse Linked ListCount Number of Nice SubarraysRemove Duplicate LettersMerge Intervals with Possibly Reversed EndpointsCount of Interesting SubarraysReverse the Order of k-Groups in a Linked ListMinimum Jumps to Reach HomeMaximum Candies Allocated to K ChildrenLongest Zigzag Path in a GridNumber of IslandsLRU Cache with High Cache-Miss Follow-upReverse Linked List in Groups of K Including the Last Partial GroupPrint Execution Order in a DAG and Detect CyclesMin Cost to Connect All PointsPath Sum III variant on N-ary TreeTask Scheduler-like with Priority QueueLowest Common Ancestor with Parent Pointers (O(1) extra space)Write a Shell Script (On-site)Delete a length-k subarray to minimize the smallest valid index (sliding window variant)Word Search II (find all words on board)Maximum Candies with At Most Two Types in a LineLRU Cache with TTL ExpirationWater Jug: Reachability and Shortest Operation SequenceConcurrency Coding: Implement Thread-Safe Components Using Locks and AtomicsGrid/Graph BFS/DFS: Return Distance and the Farthest (Max) Point