Amazon Non Software Development Engineer interview questions

2 Phone interviews + 1 onsite interview. Exceptionally professional; they really treat you very very well! Questions: 1. Find common elements between two arrays of integers. 2. Find cycles in a graph. 3. Efficiently find duplicate elements in an array of numbers with bounded entries (for example, elements are between 0 and 99). 4. Reverse word sequence in a string inplace. 5. Efficiently find all Pythogorean triplets in a given array of integers. 6. Find all anagrams in a list of words. 7. Set operations.