Facebook is known for conducting rigorous coding interviews to assess the technical skills and problem-solving abilities of potential candidates. These interviews are designed to test a candidate’s knowledge of algorithms, data structures, and coding principles. If you are preparing for a Facebook coding interview, it is crucial to familiarize yourself with the types of questions you may encounter during the process. In this article, we will provide you with a comprehensive list of Facebook coding interview questions to help you prepare effectively.
See these Facebook Coding Interview Questions
- Write a function to check if a given string is a palindrome or not.
- Implement a function to reverse a linked list.
- Given a list of integers, find the sum of all pairs of numbers in the list that add up to a given target.
- Implement a stack using two queues.
- Given a binary tree, find the maximum path sum.
- Write a function to determine if a given string is an anagram of another string.
- Implement a function to find the median of a sorted array.
- Write a program to find the kth largest element in an unsorted array.
- Given a string, find the length of the longest substring without repeating characters.
- Implement a function to merge two sorted linked lists.
- Write a program to implement a binary search algorithm.
- Given a list of intervals, merge overlapping intervals.
- Implement a function to find the square root of a given number.
- Write a program to reverse a string in-place.
- Given a list of integers, find the longest increasing subsequence.
- Implement a function to check if a given binary tree is a binary search tree.
- Write a program to find the missing number in a given list of integers.
- Given a string, find the first non-repeating character.
- Implement a function to convert a binary search tree to a sorted doubly linked list.
- Write a program to find the common elements in three sorted arrays.
- Given a list of integers, find the maximum product of three numbers.
- Implement a function to find the longest common prefix in a list of strings.
- Write a program to implement a depth-first search algorithm.
- Given a list of intervals, find the minimum number of meeting rooms required.
- Implement a function to check if a given string is a valid palindrome.
- Write a program to implement a breadth-first search algorithm.
- Given a list of integers, find the maximum sum of any contiguous subarray.
- Implement a function to check if a given linked list contains a cycle.
- Write a program to find the majority element in a given list of integers.
- Given a list of strings, group anagrams together.
- Implement a function to find the longest palindromic substring in a given string.
- Write a program to implement a topological sort algorithm.
- Given a binary tree, find the lowest common ancestor of two nodes.
- Implement a function to check if a given string is a valid parentheses expression.
- Write a program to implement a quicksort algorithm.
- Given a list of integers, find the maximum difference between two elements in the list.
- Implement a function to check if a given binary tree is balanced.
- Write a program to implement a merge sort algorithm.
- Given a list of intervals, find the minimum number of intervals to remove to make the rest non-overlapping.
- Implement a function to check if a given string is a valid IP address.
- Write a program to implement a Dijkstra’s algorithm.
- Given a list of integers, find the maximum profit that can be made by buying and selling stocks.
- Implement a function to check if a given binary tree is symmetric.
- Write a program to implement a binary search tree.
- Given a list of integers, find the maximum sum of two non-overlapping subarrays.
This list of Facebook coding interview questions is by no means exhaustive, but it should give you a good starting point for your preparation. Remember to practice solving these questions on a whiteboard or a coding platform to simulate the interview environment. Good luck!







