Program Analyst Trainee Interview Questions and Answers for Freshers

I know several programming languages including Java, Python, and C++.

• Proficient in Java, Python, and C++

• Familiar with HTML, CSS, and JavaScript

• Experience with SQL and database management

• Knowledge of object-oriented programming principles

• Comfortable with version control systems like Git

SQL query to find 3rd maximum salary.

• Use the ORDER BY clause to sort the salaries in descending order.

• Use the LIMIT clause to limit the result to the third row.

• Use a subquery to exclude the top two salaries and select the third highest salary.

Program to check if a given string is a palindrome or not.

• Remove all non-alphanumeric characters from the string

• Convert the string to lowercase

• Reverse the string and compare with the original string

• If both are equal, then the string is a palindrome

String buffer is synchronized and thread-safe, while string builder is not synchronized and faster.

• String buffer is synchronized, making it thread-safe for use in multi-threaded environments.

• String builder is not synchronized, resulting in faster performance but not thread-safe.

• String builder is preferred for single-threaded operations, while string buffer is preferred for multi-threaded operations.

Strings can be compared using built-in functions like strcmp in C or equals() in Java.

• Use strcmp function in C to compare two strings

• In Java, use equals() method to compare two strings

• Consider case sensitivity when comparing strings

• Use built-in functions to handle special characters and whitespace