Meta Full Loop | Passed - Meta | Interview Experiences

Summary

I passed the Meta full loop interview for an E4 role in the US, which included a phone screen, two technical rounds focusing on Data Structures & Algorithms, and a system design interview.

Full Experience

E4 US

Phone Screen

Range Sum of BST

https://leetcode.com/problems/range-sum-of-bst/description/?envType=company&envId=facebook&favoriteSlug=facebook-thirty-days

Variation of Expression Add Operators (no multiplication)

https://leetcode.com/problems/expression-add-operators/description/?envType=company&envId=facebook&favoriteSlug=facebook-thirty-days

Technical Round 1

Nested List Weight Sum

https://leetcode.com/problems/nested-list-weight-sum/description/?envType=company&envId=facebook&favoriteSlug=facebook-thirty-days

All Nodes Distance K in Binary Tree

https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree/description/?envType=company&envId=facebook&favoriteSlug=facebook-thirty-days

Technical Round 2

Range Sum Query - Immutable

https://leetcode.com/problems/range-sum-query-immutable/description/

Shortest Path in Binary Matrix, follow up -> keep track of the shortest path

https://leetcode.com/problems/shortest-path-in-binary-matrix/description/?envType=company&envId=facebook&favoriteSlug=facebook-thirty-days

System Design

Design Facebook news feed

Interview Questions (7)

Range Sum of BST

Data Structures & Algorithms

Given the root of a binary search tree, and two integers low and high, return the sum of all nodes' values that are in the inclusive range [low, high].

Expression Add Operators (Variation - no multiplication)

Data Structures & Algorithms

Given a string 'num' that contains only digits and an integer 'target', add binary operators (except multiplication, as specified in the variation) '+', '-' to 'num' such that their evaluation equals 'target'. Return all possible expressions that you can build.

Nested List Weight Sum

Data Structures & Algorithms

Given a nested list of integers, return the sum of all integers in the list weighted by their depth. Each element is either an integer or a list (whose elements may also be integers or other lists).

All Nodes Distance K in Binary Tree

Data Structures & Algorithms

Given the root of a binary tree, a target node in the tree, and an integer 'k', return an array of the values of all nodes that have a distance 'k' from the target node.

Range Sum Query - Immutable

Data Structures & Algorithms

Given an integer array 'nums', handle multiple queries of the following type: Calculate the sum of the elements of 'nums' between indices 'left' and 'right' inclusive ('nums[left]', 'nums[left + 1]', ..., 'nums[right]'). Implement the 'NumArray' class.

Shortest Path in Binary Matrix with Path Tracking

Data Structures & Algorithms

Given an n x n binary matrix 'grid', return the length of the shortest clear path in the matrix. If there is no clear path, return -1. A clear path is a path from the top-left cell (0, 0) to the bottom-right cell (n - 1, n - 1) such that all visited cells are 0. Follow up: keep track of the shortest path itself.

Design Facebook News Feed

System Design

Design a scalable system for the Facebook news feed, considering aspects like feed generation, fan-out approaches, storage, and real-time updates.

Help the Community

Meta Full Loop | Passed

Summary

Full Experience

Phone Screen

Technical Round 1

Technical Round 2

System Design

Interview Questions (7)

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