ARC Document Solution Technical Interview Experience

It was an offline technical Interview. 

• Introduction
• Remove duplicate from an array without Hash
• Count pairs of the given sum without hash, and swap two numbers without a third variable.
• SQL join, Show rows that are present in one table but not in other.
• 2nd highest salary using SQL
• Four pillars of OOPs
• Explain polymorphism
• How to implement multiple inheritances in java. (Interface)
• Why do we need OOPs
• How to achieve Encapsulation, Main advantage.
• Interested area. (I said full stack development)
• Project details.
• Access modifiers. Explanation of Protected Keyword.

The interview continues for 50 mins. Two days later I got the selection mail.