Convert a tree to a doubly linked list.
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Given a string A and B return true if A occurs as an anagram in B
1. merge two sorted arrays together 2. given a m * n grids, and one is allowed to move up or right, find the number of paths between two grids.
You are given a bunch of dominoes. Write a function that determines if any two of those dominoes add up to [6, 6] (e.g. [1,4] + [5, 2]).
Given an array of integers, find the maximum number that can be reached by summing the best possible consecutive subsequence of the array.
They had asked me what's wrong with this particular code and how/which part would I improve it?
2D matrix BFS. Can't believe the interviewer does not know how to use queue to do BFS.
Tell me ten features of C++ (that are not in C) that have nothing to do with object oriented programming.
Given a list of versions (in string format). The versions can have invalid characters (requires cleaning). Print the list in sorted order of increasing versions. Input: ["1.2.34", "$5.j8", "3.4#", "3.45"] output: 1.2, 3.4, 3.45
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