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Software Development Engineer Interview Questions

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Asked to implement a function that takes an integer and returns whether or not the number had an odd or even number of 1 bits.

6 Answers

Pancakes, size varies, and are put in a stack with random order. You have one operation called Flip(int[] pancakes, int k) to flip all pancakes from the top one to kth pancake, write a sort(int[] pancakes]) method

6 Answers

You are given an array with n positive integers where all values in the array are repeated except for one. Return the one that is not repeated.

8 Answers

Given a binary tree with the usual left and right pointers on each node, and additionally a parent pointer, make an algorithm to discover the closest ancestor to 2 nodes on the tree.

7 Answers

Given the head pointers to two linked lists of unknown length, find the node of intersection if they do intersect.

5 Answers

Write a program to find the square root of a double.

5 Answers

Given two very large binary trees T1, with millions of nodes, and T2, with hun- dreds of nodes, create an algorithm to decide if T2 is a subtree of T1.

6 Answers

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.

5 Answers

How would you implement a top 3 word count in a text editor application?

7 Answers

Describe and code an algorithm that returns the first duplicate character in a string?

11 Answers