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Facebook E4 Interview Questions!

Still waiting on my offer but happy that I’m finally done with the interview process. Here are some of the questions I got during my various interviews (datasets not included unfortunately):

-Find the index of a given subset within an array of n positive integers.
-Perform a binary tree reorder transversal using recursive and another way.
-Given two sorted integer arrays nums1 and nums2, merge nums2 into nums1 into one sorted array.
-Given a string s of ‘(’ , ‘)’ and lowercase English characters. Your task is to remove the minimum number of parentheses ( ‘(’ or ‘)’, in any positions ) so that the resulting parentheses string is valid and return any valid string.
-Design am Instagram bidding system.
-Find the largest value in a list.

This is amazing! Thanks for sharing with the community.