They asked me to extract words from the parse tree. e.g. ((NJ (NN James) XX is) (AJ tall)) -> James is tall. Another question is to reverse a string an capitalize all the starting positions of words and lower case all the ending positions of words. e.g. Hello World -> Dlrow Olleh
Find the maximal and minimal number in an array of integers
A task in which I was required to print all numbers between 1 and a million - with no repeating digits - Easy enough! Just can throw you off guard a bit
Define binary search tree. Develop a procedure to verify a binary search tree.
There were 2 questions: 1 design and 1 implementation. The design was something like the following: you have a billion google searches a day, design a data structure which lets you pull out the top 100 unique ones at the end of the day.
1. mutable, non mutable classes in Java 2. declaring constants in Java 3. x^y algorithm and its optimization. 4. second largest number from Binary Tree
Find the number of ways to get from one corner of a grid to the opposite corner, by going down or right only.
Check if a string is balanced
Grid Illumination: Given an NxN grid with an array of lamp coordinates. Each lamp provides illumination to every square on their x axis, every square on their y axis, and every square that lies in their diagonal (think of a Queen in chess). Given an array of query coordinates, determine whether that point is illuminated or not. The catch is when checking a query all lamps adjacent to, or on, that query get turned off. The ranges for the variables/arrays were about: 10^3 < N < 10^9, 10^3 < lamps < 10^9, 10^3 < queries < 10^9.
Given a 1TB file of serialized 4 byte integers, and 2GB of ram, sort the integers into a resulting 1TB file. My interviewer was very collaborative in entertaining various solution ideas until we came up with a combo that would work performantly and reduce the number of passes over the 1TB file and intermediate files.
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