Xactly Corp Interview Questions and Answers

Level order traversal visits nodes of a tree level by level, from left to right.

• Use a queue to keep track of nodes at each level.

• Start with the root node, enqueue it, and then process each node.

• For each node, enqueue its left and right children if they exist.

• Continue until the queue is empty, collecting values in order.

• Example: For a tree with root 1, left child 2, right child 3, the traversal is [1, 2, 3].

A key generator is a tool used to create unique keys for various purposes.

• Use a combination of letters, numbers, and special characters to create a unique key

• Consider using a hashing algorithm to generate the key

• Ensure the key is sufficiently long and random to minimize the chance of collisions

Windows function refers to the set of built-in functions provided by the Windows operating system to perform various tasks.

• Windows functions are pre-defined functions provided by the Windows operating system to perform specific tasks.

• These functions can be used by developers to interact with the operating system, manage resources, and perform various operations.

• Examples of Windows functions include CreateWindow, S...read more

Reverse a string in Java

• Convert the string to a character array

• Loop through the array and swap the first and last characters

• Continue swapping until the middle of the array is reached

• Convert the character array back to a string

System design problems involve designing scalable and efficient software systems.

• Consider scalability, reliability, and performance requirements

• Break down the system into smaller components and define their interactions

• Choose appropriate technologies and architecture patterns

• Optimize for performance and consider fault tolerance

• Consider data storage, caching, and load balancing strategies