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Software Engineer/Software Developer Interview Questions

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“Find the 20 longest strings in a text file.”

“Given a binary tree, how would you set the keys/values of all the nodes and their child pointers to null. No language restriction. Do it iteratively in O(N) time with O(1) space complexity where N...”

“How would you reverse a linked list in Java?”

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“Find k largest/smallest number in a series of numbers. What data-structures will you use? Code it on white board.”

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“Make a program that writes a Binary Search Tree to a file. Now create a program that reads those files and recreates a Binary Search Tree.”

“Write a program that sees if two binary trees are equal.”

“Write a method to decide if the given binary tree is a binary search tree or not.”

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“Given an array of integers, all but one of which appears an even number of times, find the one integer which appears an odd number of times. Upon completion, asked to improve the algorithm in terms...”

“Print all permutations of a given string.”

“Given an array, return the nth largest.”

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