Had a recent phone screen with Meta, wanted to share my experience.

Question 1:
Plus One: https://leetcode.com/problems/plus-one/
Input was given char array and the expected out is in char arry ['1','2','3']-> ['1','2','4']

Question2:
Vertical Order binary tree(LC:Hard) https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree/