Data structures and algorithm questions were asked
Engineer Intern Interview Questions
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Given two nodes in a binary tree, find their first common ancestor (if it exists).
what is object and what is interference in OOD
Serialization and Deserialization of Binary Tree
Given a linked list , swap alternate nodes of linked list . For eq: 1 2 3 4 will become 2 1 4 3 and 1 2 3 4 5 6 will become 2 1 4 3 6 5 .
Provided two files, one with inventory and the other with warehouses, with the item ID present in both files; code something that would merge these two into one single file using the item ID as reference.
Design an algorithm to take a list of strings as well as a single input string, and return the indices of the list which are anagrams of the input string, disregarding special characters. Given a binary tree which is a sum tree, write an algorithm to determine whether the tree is a valid sum tree or not. Then, write an algorithm that will fix the tree to make it a sum tree. Then, write an algorithm which will fix a tree to make it a sum tree by only using addition.
Binary search on a sorted array that was rotated once
I was asked two questions - how will you know which is the starting point in a circular linked list (write a program) and write a program to return two numbers from a function to the main
In-place array reversal, level-order binary tree traversal, reading two files and outputting strings common to both.
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