Dashboard Problems Companies Topics SQL System Design AI

No account needed. Your solved list, notes and streak are saved in this browser. Export them from Settings.

Companies

Dashboard Problems Companies System Design

Search

Jump to any problem, company or topic

TikTok interview questions (all time) · FAANGrind

TikTok

ProductGlobal All time

TikTok is ByteDance's short-video platform, with recommendation, video processing, live streaming and e-commerce systems serving over a billion users.

Est. 2016

Problems: 349
Window: All time
Topics: 6

349 problems

TopicsLinks

1

1.Lowest Common Ancestor of a Binary Tree III

Medium7 co.

Medium

Hashing Binary Trees

also at 6 more

2

2.Greatest Common Divisor of Strings

Easy3 co.

Easy

also at 2 more

3

3.Maximum Spending After Buying Items

Hard2 co.

Hard

also at 1 more

4

4.Find square root of a number

Medium16 co.

Medium

also at 15 more

5

5.Check for symmetrical BTs

Medium10 co.

Medium

Recursion & Backtracking Binary Trees

also at 9 more

6

6.Implement Rand10() Using Rand7()

Medium3 co.

Medium

also at 2 more

7

7.Remove Duplicates from Sorted Array II

Medium3 co.

Medium

also at 2 more

8

8.Shortest Unsorted Continuous Subarray

Medium3 co.

Medium

also at 2 more

9

9.Expression Add Operators

Hard10 co.

Hard

Recursion & Backtracking Mathematics

also at 9 more

10

10.Binary Tree Longest Consecutive Sequence

Medium7 co.

Medium

also at 6 more

11

11.Find the Duplicate Number

Medium16 co.

Medium

Arrays Bit Manipulation

also at 15 more

12

12.Serialize and De-serialize BT

Hard21 co.

Hard

also at 20 more

13

13.Lowest Common Ancestor of a Binary Tree IV

Medium1 co.

Medium

also at 0 more

14

14.Spiral Matrix II

Medium4 co.

Medium

also at 3 more

15

Easy7 co.

Easy

also at 6 more

16

16.Integer to Roman

Medium16 co.

Medium

also at 15 more

17

17.Non-overlapping Intervals

Medium22 co.

Medium

Arrays Greedy Algorithms

also at 21 more

18

18.Number of Visible People in a Queue

Hard8 co.

Hard

also at 7 more

19

19.Numbers At Most N Given Digit Set

Hard1 co.

Hard

Dynamic Programming

also at 0 more

20

20.Shortest Bridge

Medium7 co.

Medium

also at 6 more

21

21.Sort an array of 0's 1's and 2's

Medium32 co.

Medium

also at 31 more

22

22.Maximal Square

Medium12 co.

Medium

Dynamic Programming

also at 11 more

23

23.Reverse a LL

Medium30 co.

Medium

also at 29 more

24

24.First and last occurrence

Medium18 co.

Medium

also at 17 more

25

25.Kth Smallest Element in a Sorted Matrix

Medium5 co.

Medium

also at 4 more

26

Easy11 co.

Easy

also at 10 more

27

27.Next Greater Element - 2

Medium21 co.

Medium

also at 20 more

28

28.Longest Valid Parentheses

Hard16 co.

Hard

Dynamic Programming

also at 15 more

29

29.Robot Room Cleaner

Hard1 co.

Hard

Recursion & Backtracking

also at 0 more

30

30.Longest Consecutive Sequence in an Array

Medium37 co.

Medium

also at 36 more

31

31.Path Sum III

Medium3 co.

Medium

also at 2 more

32

32.Find peak element

Medium28 co.

Medium

also at 27 more

33

33.Arithmetic Slices

Medium2 co.

Medium

Dynamic Programming

also at 1 more

34

34.Valid Square

Medium1 co.

Medium

also at 0 more

35

Easy1 co.

Easy

also at 0 more

36

36.Remove Duplicates from Sorted List II

Medium5 co.

Medium

also at 4 more

37

37.Snakes and Ladders

Medium5 co.

Medium

also at 4 more

38

38.Remove Duplicate Letters

Medium8 co.

Medium

also at 7 more

39

39.Merge In Between Linked Lists

Medium3 co.

Medium

also at 2 more

40

40.Evaluate Division

Medium9 co.

Medium

also at 8 more

41

41.Valid Palindrome II

Easy8 co.

Easy

Greedy Algorithms

also at 7 more

42

42.Making a large island

Hard13 co.

Hard

also at 12 more

43

43.Find the intersection point of Y LL

Medium17 co.

Medium

also at 16 more

44

44.Minimum Operations to Write the Letter Y on a Grid

Medium5 co.

Medium

also at 4 more

45

45.Find Maximum Non-decreasing Array Length

Hard1 co.

Hard

Dynamic Programming

also at 0 more

46

46.Find Median from Data Stream

Medium30 co.

Medium

also at 29 more

47

47.Minimum Moves to Spread Stones Over Grid

Medium2 co.

Medium

Recursion & Backtracking

also at 1 more

48

48.Snapshot Array

Medium7 co.

Medium

Advanced Range Data Structures

also at 6 more

49

49.Surrounded Regions

Medium13 co.

Medium

also at 12 more

50

50.Top K Frequent Elements

Medium33 co.

Medium

also at 32 more

…

Showing 1–50 of 349

Difficulty split

Easy21(6%)
Medium269(77%)
Hard59(17%)

Top topics

Graphs45
Dynamic Programming43
Arrays35
Strings24
Greedy Algorithms23
Stack & Queues23