AST SpaceMobile Interview Questions and Answers

Find the maximum sum path in a matrix from top row to bottom row by moving down or diagonally.

• Use dynamic programming to keep track of maximum sum at each cell.

• At each cell, consider the maximum sum from the cell above, left diagonal, and right diagonal.

• Add the current cell value to the maximum of the three possibilities.

• Repeat this process for all cells in the matrix to find the maximum sum path.

Find the node where two linked lists merge, return -1 if no merging occurs.

• Traverse both lists to find the lengths and the last nodes

• Align the starting points of the lists by adjusting the pointers

• Traverse both lists simultaneously until a common node is found

Modify a boolean matrix such that if any element is 1, set its entire row and column to 1.

• Iterate through the matrix to find elements with value 1

• Store the row and column indices of these elements

• Update the entire row and column for each element found to be 1

Data Analysts are responsible for collecting, processing, and analyzing data to help organizations make informed decisions.

• Collecting and organizing data from various sources

• Cleaning and processing data to ensure accuracy and consistency

• Analyzing data using statistical techniques and tools

• Creating visualizations and reports to present findings

• Interpreting data to provide insights and recommendations

• Collaborating with stakeholders to understand business needs and goals

Collection framework is a set of interfaces and classes in Java that provide a way to store and manipulate groups of objects.

• Provides interfaces like List, Set, Map for storing collections of objects

• Includes classes like ArrayList, HashSet, HashMap for implementing these interfaces

• Allows for easy manipulation, sorting, searching, and iteration of collections

• Used in various applications like data processing, data storage, and data retrieval