TikTok Interview Questions

Avon T. - "Initialize left pointer: Set a left pointer left to 0. Iterate through the array: Iterate through the array from left to right. If the current element is not 0, swap it with the element at the left pointer and increment left. Time complexity: O(n). The loop iterates through the entire array once, making it linear time. Space complexity: O(1). The algorithm operates in-place, modifying the input array directly without using additional data structures. "See full answer

Jaswanth P. - " Prioritized Features for Improvement 1. Content Discovery and Recommendation Algorithm Rationale: The algorithm significantly influences user engagement by determining which videos appear on the "For You Page" (FYP). Improving its accuracy can enhance user satisfaction and retention. - Approach: Incorporate more nuanced data points, such as user mood indicators or contextual data (e.g., time of day, trending events) to refine recommendations further. Regular updat"See full answer

V V. - "Simple file system ( Hash Map , LSM trees), and consistent hashing. I failed to discuss about conflicts ( Versioning)"See full answer

Anonymous Hare - "Sharing the approach for functional requirements we tool to solve this question. Functional Requirements This is only for the Registered users What is a "For You" page ? Home page where you get suggestions based on people you follow. Interactions like/share/comments (done by user) Interests (shared by the user during registration or onboarding) sports choices/ region choices/ Video sharing platform. So how many videos should we s"See full answer

Nikita B. - "Mission for TikTok shop is to increase brand growth and sales. TikTok gives platform to these brands/advertiser to market their products via influencers/creators to be able to sell their products faster and users on tiktok platform(mainly Gen-z) are motivated to make inspirational based discovery of products and purchase them So main objective for TikTok shop could be Increase sales for diverse brands So, some of the metrics to consider would be: no of orders placed per week"See full answer

Mahima M. - "class Solution: def lengthOfLIS(self, nums: List[int]) -> int: temp = [nums[0]] for num in nums: if temp[-1]< num: temp.append(num) else: index = bisect_left(temp,num) temp[index] = num return len(temp) "See full answer

Laksitha R. - "public static int maxProfitGreedy(int[] stockPrices) { int maxProfit = 0; for(int i = 1; i todayPrice) { maxProfit += tomorrowPrice - todayPrice; } } return maxProfit; } "See full answer

Divya R. - "public static Integer[] findLargest(int[] input, int m) { if(input==null || input.length==0) return null; PriorityQueue minHeap=new PriorityQueue(); for(int i:input) { if(minHeap.size()(int)top){ minHeap.poll(); minHeap.add(i); } } } Integer[] res=minHeap.toArray(new Integer[0]); Arrays.sort(res); return res; }"See full answer

Jaswanth P. - "Proposed Solution: Awareness and Control Features Algorithm Awareness Campaign Educational Content: Create short videos explaining how the algorithm works to enhance user experience. Transparency Reports: Regular updates on algorithm changes to keep users informed. User-Controlled Engagement Settings Customizable Feed Options: Allow users to adjust content preferences and limit certain types of videos. Time Management Tools: Introduce reminders for screen time limits an"See full answer

Tracy C. - "CQ: TikTok is a short-form video platform Elderly here means older than 65 years age? Retire folks with more leisure time. Do we currently have elderly viewers and or creators on our current platform? Mission: TikTok's mission is to inspire creativity and bring joy. Strategy: For elderly, they are retired with more free time to enjoy life and consume entertainment content. The elderly also have lost creativity as they age and we see higher levels of creativity with younger folk"See full answer

onering2ruleall - "My leadership style is flexible and adaptive, it varies depending on the team members and the needs of the company. My leadership goal is to empower the team and inspire and grow leaders. In order to achieve that, I combine transformational, democratic and coaching leadership styles. Usually when we are facing a new type of challenge, or at the early stage of a project, I like to adapt the transformational leadership which allows me to listen to all the suggestions from the team members and sta"See full answer

Maria T. - "Clarifying questions: Will it be a separate app of Google maps or integrated into an existing one? Let's say it will be integrated into an existing app. Which disabilities users have? Any of your choice. For which audience are we building this product? Any exact geo, age, gender? Any of your choice. How many resources we have? Any timeline for the product to be launched? Need to launch a product in a year and any resources required. Google's mission is to organize the world's"See full answer

Jerry O. - "\# Definition for a binary tree node. class TreeNode: def init(self, val=0, left=None, right=None): self.val = val self.left = left self.right = right class Solution: def maxPathSum(self, root: TreeNode) -> int: self.max_sum = float('-inf')"See full answer

Rick E. - " from typing import List def getnumberof_islands(binaryMatrix: List[List[int]]) -> int: if not binaryMatrix: return 0 rows = len(binaryMatrix) cols = len(binaryMatrix[0]) islands = 0 for r in range(rows): for c in range(cols): if binaryMatrixr == 1: islands += 1 dfs(binaryMatrix, r, c) return islands def dfs(grid, r, c): if ( r = len(grid) "See full answer

Disha - "TikTok → short-form video platform where users share, post, comment, and like each other’s videos Clarifying Questions Define Active → Users who are opening the app at least once a day for a particular duration say 1 min Geography? Consider India for this case Is the source/BI Tool where we saw the drop valid enough? TikTok is both on the app as well as browser - Where are we seeing the drop? Is there a particular platform wherein we are seeing the drop? Android or iOS New"See full answer

Anonymous Roadrunner - "from typing import List def three_sum(nums: List[int]) -> List[List[int]]: nums.sort() triplets = set() for i in range(len(nums) - 2): firstNum = nums[i] l = i + 1 r = len(nums) - 1 while l 0: r -= 1 elif potentialSum < 0: l += 1 "See full answer