Amazon Software Development Engineer interview questions

the first round for this position was Written test. Following are the questions - 1. Write a program to find next largest element in binary search tree. 2. Write a program to search element in circular sorted array 3. Write a program to reverse a linked list in a chunk of 3 . ex. consider the following linked list 1-2-6-75-33-10-5-3-2 , then the output should be 6-2-1-10-33-75-2-3-5. i was not shortlisted . so it might help others .