Question Overview: This question is designed to see how well a candidate understands the difference between Code-First and Database-First method.
Sample Answer: Code-First is a development approach in which you write your code first and then create your database. Database-First is a development approach in which you create your database first and then write your code.
Question Overview: This is a basic computer science question that tests a candidate's knowledge of data structures and algorithms.
Sample Answer: A linked list is a data structure that contains a series of nodes. Each node contains a value and a pointer to the next node in the list. The last node in the list contains a pointer to null, which is used to indicate the end of the list.
Question Overview: This question is designed to test the candidate's knowledge of Java and their ability to articulate their experience with the language.
Sample Answer: I've been working with Java for the last five years. I've worked on a number of different projects using Java, from web applications to desktop applications. I've also worked on a few Android apps using Java.
Question Overview: This question is designed to test a candidate's knowledge of data structures and their ability to implement them.
Sample Answer: I would create a class called Stack that would have two private variables: a pointer to the top of the stack and an integer that represents the number of items in the stack. The constructor would take two parameters: the number of items in the stack and the pointer to the top of the stack. The push() method would take a single parameter, which is the item to be added to the stack. The pop() method would take no parameters and return an item from the stack. The min() function would take no parameters and return an integer representing the minimum value in the stack.
Question Overview: This question is designed to test the candidate's problem-solving skills and their ability to think outside the box.
Sample Answer: I would first try to find the highest value that the first number could be. Then I would try to find the lowest value that the second number could be. Then I would try to find a range of values for both numbers that would sum to the target value.
Question Overview: This question is designed to see how well a candidate can communicate outside of their professional life. It also gives you insight into what they do for fun and how they spend their free time.
Sample Answer: I like to go running in the mornings, and I'm a big fan of the New York Yankees. I also like to read books on history and politics, and I'm a member of the local library.
Question Overview: This is a basic coding question that tests the candidate's knowledge of the most common string functions.
Sample Answer: I would use a for loop to iterate through each character in the string and use a switch statement to check if the character is a letter or not. If it is a letter, I would add it to the end of the reversed string, and if it isn't, I would add a space to the end of the reversed string.
Question Overview: This question is designed to see how well a candidate can think through a problem, and how they would implement a solution.
Sample Answer: A least recently used cache is a cache that stores the least recently used items in memory. This is useful for applications that have a lot of traffic and need to keep the most frequently accessed items in memory. The first step in designing a LRU cache is to determine what data structure you will use to store the items. I would use a hash table with a size of 2^n, where n is the number of items in the cache. The next step is to determine how you will determine if an item is least recently used. I would use a timestamp on each item in the cache, and then use that timestamp to determine if an item was least recently used.
Question Overview: This question tests a candidate's ability to think through a problem and come up with a solution.
Sample Answer: I would start by drawing a map of the current Amazon locations. Then I would look at the map and try to find patterns in where they are located. I would then try to find a pattern in the new proposed locations and see if there is a way to optimize the placement of new stores.