TikTok (ByteDance)

4 rounds·3-4 weeks (avg 25 days)·9 patterns·40% hard

Key patterns

Showing 3 of 9

1arrays hashing

medium95%

2dp 1d

hard90%

3dp 2d

hard85%

4graphs

hard80%

5binary search

medium75%

+6 more patterns

Showing 3 of 7

Daily Temperaturesvery common

Construct Binary Tree from Preorder and Inordervery common

Number of Islands (BFS/DFS)very common

Longest Increasing Subsequence (DP)very common

LRU Cachecommon

+4 more must-know questions

Showing 1 of 4 rounds

1. HackerRank OA - 6 questions in 2 hours120 min

algorithmsspeed

2. Technical round 1 - 2 LeetCode problems60 min

algorithmsoptimization

+3 more interview rounds

Pacefast

Optimal requiredyes

Hints givenrarely

1/6

Entry$XXX,XXX

Mid$XXX,XXX

Senior$XXX,XXX

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The average TikTok (ByteDance) candidate needs 18 hours to cover all patterns.