Qualcomm Associate Engineer Interview Questions and Answers

Construct a tree from pre and post order traversal arrays.

• Start by creating a root node using the first element of the pre-order array.

• Find the index of the root node in the post-order array to divide it into left and right subtrees.

• Recursively build the left and right subtrees.

• Repeat the process for each subtree until the tree is fully constructed.

Deep copy in C involves creating a new copy of data, allocating separate memory for it, unlike shallow copy which shares memory.

• Deep copy allocates new memory for the copied data.

• Shallow copy copies the pointer, sharing the same memory location.

• Example: For an array of integers, deep copy creates a new array with the same values.

• Use 'malloc' for dynamic memory allocation in deep copy.

• Deep copy is essential for avo...read more

Implement search, insert, and delete operations in binary trees.

• For search operation, start at the root and recursively search left or right subtree based on the value being searched.

• For insert operation, start at the root and recursively find the correct position to insert the new node.

• For delete operation, find the node to be deleted, handle different cases (no child, one child, two children) accordingly.

Workqueues are data structures used in operating systems to manage tasks and prioritize their execution.

• Workqueues are used to schedule and manage tasks in an operating system.

• They help in prioritizing tasks based on their importance and urgency.

• Workqueues are commonly used in kernel programming to handle asynchronous tasks.

• Examples of workqueues include the Linux kernel workqueue and Windows kernel workqueue.

The asymptotic bound on capacity refers to the maximum amount of data that can be transmitted through a communication channel.

• Asymptotic bound on capacity is a theoretical limit that determines the maximum data rate of a channel.

• It is influenced by factors such as bandwidth, signal-to-noise ratio, and channel coding.

• Shannon's capacity formula is often used to calculate the asymptotic bound on capacity.

• For example,...read more