10+ Program Analyst Interview Questions and Answers for Freshers

The task is to find the length of the longest common subsequence between two given strings.

• Implement a function to find the longest common subsequence between two strings

• Use dynamic programming to solve the problem efficiently

• Iterate through the strings to find the common subsequence

• Handle edge cases like empty strings or strings with no common subsequence

Find the pair of elements with the smallest absolute difference from two unsorted arrays.

• Sort both arrays to simplify finding the pair with the smallest difference.

• Use two pointers approach to iterate through both arrays and find the pair with the smallest difference.

• Keep track of the minimum absolute difference and update it as you find smaller differences.

• Return the minimum absolute difference once all pairs have been checked.

Program to compute sum of big integers represented as strings.

• Convert strings to integers and add them digit by digit from right to left, considering carry over.

• Handle cases where one number is longer than the other by padding with zeros.

• Return the final sum as a string.

The task is to find three integers in an array whose sum is closest to a given target.

• Iterate through all possible triplets in the array to find the closest sum to the target.

• Keep track of the closest sum found so far and update it if a closer sum is found.

• Return the closest sum found after iterating through all triplets.

Implement a function to determine if the binary representation of a given integer is a palindrome.

• Convert the integer to binary representation

• Check if the binary representation is a palindrome by comparing it with its reverse

• Return true if it is a palindrome, false otherwise

Calculate the Nth Fibonacci number efficiently using dynamic programming.

• Use dynamic programming to store previously calculated Fibonacci numbers to avoid redundant calculations.

• Start with base cases F(1) and F(2) as 1, then iteratively calculate F(n) using F(n-1) and F(n-2).

• Ensure the input N is within the constraints 1 <= N <= 10000.

• Return the Nth Fibonacci number as the output.

Object-oriented programming concepts include encapsulation, inheritance, and polymorphism.

• Encapsulation: Bundling data and methods together in a class to hide implementation details.

• Inheritance: Creating new classes from existing ones, inheriting their properties and behaviors.

• Polymorphism: Objects of different classes can be treated as objects of a common superclass.

• Example: Encapsulation - A class 'Car' with private variables like 'speed' and public methods like 'accelerate...read more

Network security refers to the practice of protecting computer networks from unauthorized access or attacks.

• Network security involves implementing various measures to prevent unauthorized access to a network, such as firewalls, intrusion detection systems, and virtual private networks (VPNs).

• It also includes ensuring the confidentiality, integrity, and availability of data transmitted over the network.

• Examples of network security threats include malware, phishing attacks, and...read more

An abstract class is a class that cannot be instantiated and is used as a base class for other classes.

• An abstract class can have abstract and non-abstract methods.

• Abstract methods have no implementation and must be implemented by the derived classes.

• An abstract class can have constructors and fields.

• An example of an abstract class is the Shape class, where the methods like area() and perimeter() are abstract and must be implemented by the derived classes like Circle and Rect...read more

Indexes in SQL are data structures that improve the speed of data retrieval operations on a database table.

• Indexes are created on columns in a table to quickly retrieve rows based on the values in those columns.

• They can be unique, allowing only unique values to be stored in the indexed column.

• Examples of indexes include primary keys, which uniquely identify each row in a table, and foreign keys, which establish relationships between tables.