Meta (Facebook) Interview Questions

Ugo C. - "function merge(L1, L2) { let L3 = { data: null, next: null }; let prev = L3; while (L1 != null || L2 != null) { if (L1 == null) { prev.next = L2; L2 = L2.next; } else if (L2 == null) { prev.next = L1; L1 = L1.next; } else if (L1.data < L2.data) { prev.next = L1; L1 = L1.next; } else { prev.next = L2; L2 = L2.next; } prev = prev.next; } return L3.next; }"See full answer

Ds S. - "Initially I asked clarifying questions like whether the tree can be empty or not and asked the interviewer to explain what is meant by left view and the explanation for the sample inputs. Then I came up with the level order traversal approach where we visit each level in the binary tree at once using a queue and at each level print the value of the first node. Interviewer seemed satisfied with the approach and asked me to code it up. Finally gave the time and space complexity of the solution."See full answer

Develop games G. - "asdsad"See full answer

Hmj V. - "Designed and framework to conduct risk and control assessment of applications that are prone to fraud risk and designed a target roadmap of overarching controls that further mitigates the risk. I explained how I took incharge of coming up with the framework for the assessment and held sessions. Role played with my team to think all the use cases possible and explained the accomplishments and takeaways."See full answer

Sneha S. - "Clarifying questions and assumptions: Personalised news feed is the culmination of curated posts, events, ads , videos, etc that is unique to each user. potentially this means that no 2 feeds are the same. I am assuming we are talking about the Facebook Blue app, since the term Newsfeed is generally associated with this app although the feed on Insta too is personalised. Thank you for this question. here is how i would structure my thoughts on arriving at success metrics for Personalised Ne"See full answer

Techzen I. - "Implemented the Java code to find the largest island. It is similar to count the island. But in this we need to keep track of max island and compute its perimeter."See full answer

Alvaro R. - "bool isValidBST(TreeNode* root, long min = LONGMIN, long max = LONGMAX){ if (root == NULL) return true; if (root->val val >= max) return false; return isValidBST(root->left, min, root->val) && isValidBST(root->right, root->val, max); } `"See full answer

pmpractice - "I would structure my answer in the following way: What's the situational context? Mission of Uber Making transportation easy by creating a platform for connecting drivers and riders Key market trends: In top tier cities there are players in the food delivery market and the size of the pie is growing fast What would feed into the decision-making? The new platform should be able to connect customers and restaurants. The key things needed to make this platform success"See full answer

Scott S. - "Situation Our data engineering team was growing rapidly, and we needed to establish a more structured management layer to support this growth. One of our senior engineers, Sarah, had consistently demonstrated leadership qualities and technical expertise. The team was working on a critical project to enhance our real-time analytics capabilities, and it became clear that we needed additional management support to ensure the project's success. Task My task was to evaluate Sarah’s potential"See full answer

Samuel M. - "function main(){ const v1=[2,3, 4, 10] const v2= [3,4 ,5,20, 23] return merge(v1,v2); } function merge(left, right){ const result=[]; while(left.length>0&& right.length>0){ if(left[0]0){ result=result.concat(left) } if(right.length>0){ result=result.concat(right) } return result; }"See full answer

Ben G. - "Ask Follow up Questions Is this for specific type of user or open? Do we have any past research that has been done? Do we have an idea of company and user goals? Do we have metrics of success? Are there any existing constraints? Why  |  5 min Why is this product or feature important? How does this product benefit customers? What business opportunities does it create? What is our hypothesis? What are our company goals? Who  |  3 min Who are the different types"See full answer

BePostive - "· Support team members to grow, people oriented, have ability to deal with underperformers, influential and motivational skills · Can deal with multiple releases and able to manage resource crunch"See full answer

Nishant V. - "Clarify: Across all platforms? - Yes Specific geographies? - No Any specific users? Like >60 years - No Benefits of profile picture: User can find their friends by identifying them through profile picture. Helps in understanding if the profile is genuine. Also establishes trust in the platform. Users checking profiles is also a way for users to engage on the platform. Possible decisions: Remove profile upload feature Make it optional No change Approach to make decis"See full answer

Sneha D. - "Design a university voting app"See full answer

Anjali M. - "Define Groups: Platform where users ( organizers and members) with shared interests can come together and express their thoughts and opinions. Meta's mission: To bring ppl closer together by giving them access to tools and technology. Groups Mission alignment: Gives Organizers and members to come closer together over shared interests and build community. Users : Organizers ( create a group-> invite people on the platform --> can accept or deny a member to the group --> Intera"See full answer

R K. - "Some clarifying questions: Is this going to be a part of exciting Meta product or completely new one? you choose Is there a particular sport or range of sports that the product should cater to? all sports, should be agnostic. What is "athletes"? pros? amateurs? fitness enthusiasts? you can decide Is there a specific problems or challenges faced by athletes does he want the product to address? feel free to make assumptions Is there a specific goal that we want to achieve"See full answer