SANA Interview Questions and Answers

To increase business, focus on customer satisfaction, expand marketing efforts, and offer promotions.

• Improve customer service to increase customer satisfaction and loyalty

• Expand marketing efforts through social media, email marketing, and targeted advertising

• Offer promotions such as discounts, referral programs, and loyalty rewards

• Analyze market trends and adjust business strategies accordingly

• Collaborate with other bu...read more

Insert a new node after a given node in a linked list without needing the head pointer.

• To insert a node, create a new node with the desired value.

• Set the new node's next pointer to the current node's next pointer.

• Update the current node's next pointer to point to the new node.

• This operation runs in O(1) time since we only manipulate pointers.

• Example: If current node is 'A' and we want to insert 'B', after insertion, 'A...read more

QuickSort is a sorting algorithm that uses divide and conquer approach.

• Choose a pivot element from the array

• Partition the array into two sub-arrays, one with elements less than the pivot and one with elements greater than the pivot

• Recursively apply the above steps to the sub-arrays

• Combine the sorted sub-arrays to get the final sorted array

Code for Fibonacci Series using Recursion, Iteration and Dynamic Programming

• Recursion: Define a function that calls itself with the previous two numbers in the series as arguments

• Iteration: Use a loop to calculate the series by adding the previous two numbers in each iteration

• Dynamic Programming: Store the previous two numbers in variables and use them to calculate the next number in the series

Implementing a Queue using Stacks

• Use two stacks to implement a queue

• Push elements onto the first stack

• When dequeuing, pop all elements from the first stack and push onto the second stack

• Pop the top element from the second stack to dequeue

• If the second stack is empty, pop all elements from the first stack and push onto the second stack

OCR uses algorithms to recognize and convert text from images into machine-readable format.

• Image Preprocessing: Enhances image quality (e.g., binarization, noise reduction).

• Character Segmentation: Identifies and separates individual characters from the text.

• Feature Extraction: Analyzes shapes and patterns of characters (e.g., edges, curves).

• Classification: Uses machine learning models to match extracted features with k...read more

Counting Sort is a sorting algorithm that sorts elements by counting the number of occurrences of each unique element.

• Count the occurrences of each element in the array

• Calculate the cumulative sum of the counts

• Place each element in the sorted array based on its count and cumulative sum

• Time complexity is O(n+k) where n is the number of elements and k is the range of input

• Example: Sort an array of strings based on their ...read more

Chrome uses an algorithm to predict and suggest words based on user input.

• Chrome's algorithm uses a combination of user history, bookmarks, and popular searches to predict and suggest words.

• The algorithm also takes into account the frequency and recency of the user's input.

• Chrome's suggestion feature is powered by Google's Autocomplete API, which uses machine learning to predict and suggest words.

• The suggestions are di...read more

I'm a dedicated student with a passion for technology and problem-solving, eager to learn and contribute in a dynamic internship role.

• Currently pursuing a degree in Computer Science, focusing on software development.

• Completed a project on developing a mobile app that helps users track their fitness goals.

• Interned at a tech startup where I assisted in debugging and improving existing software.

• Active member of the univer...read more