- HR Phone Interview - HackerRank Coding Challenge - 1st Technical Phone Interview, with HackerRank for screen sharing for coding Waiting to find out results from my 1st Technical Phone Interview. Will update review with any further rounds. HR - Same as all previous reviews HackerRank - Choose 2 out of 5 Sections - I chose MATLAB - MATLAB: 22 Multiple Choice: Stem, loops - Java: 2 Coding, 7 or so Multiple Choice: Reverse a String, Get items out of HashMap Sequentially (<String,String> type) 1st Technical Phone Interview Polite interviewer, though not overtly friendly. No feedback - Used HackerRank Screen Sharing - Java: Polymorphism, Interface vs Abstract Class, Garbage Collector, Is there a a destructor, what are generics and why are they helpful, threading, synchronized block - MATLAB: How to improve performance of a MATLAB program (prompted me to preallocation, vectorization), .* vs *, - OOD: Binary Search Tree - Math/Other: Birthday Paradox, Logic (40 in Class, 22 people take Math, 12 take Math and English, how many take only English?), Algorithm for finding GCD (I did not know this at all...), run times for various sorting algorithms