Sample Questions for Amazon Interview (Part - I)

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1. Count of internal (non-leaf) nodes of a tree
2. Implement atoi()
3. Convert Binary tree to a Doubly Linked List (in place)
4. Why is Virtual Memory needed
5. Data Structures that can be used in implementation of a dictionary.
6. Difference between threads and processes.
7. What is meant by a "32-bit" architecture
8. From a standard set of 52 playing cards, one card is missing. Algo to find the missing  
    card.
9. From an array of 2n+1 numbers, n numbers repeat once. Algo to find the unique number.
10. An array of integers has a kth element such that elements before k are in ascending   
    order and elements after k are in descending order. Algo to find k.