Facebook Software Engineer

Both questions involved stack problems combined with mathematical concepts.

Merge k sorted arrays, implement next number encoding, build a binary search tree, and check if a string is a palindrome.

Calculate the sum of two large floating-point numbers.

Find the next greater number that can be formed using the same set of digits.

Write a program to solve a maze.

I was asked a standard coding data structures and algorithms question from LeetCode.

I was asked LeetCode-style questions involving arrays, dynamic programming, and stacks.

Describe and explain graph and tree traversal methods.

Implement a basic calculator that supports addition and multiplication operations.

I was asked dynamic programming questions from LeetCode.