Thoughts2Binary Consulting & Solutions Software Developer Interview Questions and Answers

Round duration - 120 minutes
Round difficulty - Hard

Q1. 
Cycle Detection in a Singly Linked List
Determine if a given singly linked list of integers forms a cycle or not.
A cycle in a linked list occurs when a node's next points back to a previous node in the ...read more
Ans. 
Detect if a singly linked list forms a cycle by checking if a node's next points back to a previous node.
• Use Floyd's Tortoise and Hare algorithm to detect a cycle in O(N) time complexity and O(1) space complexity.

• Initialize two pointers, slow and fast, and move them at different speeds through the list.

• If there is a cycle, the fast pointer will eventually meet the slow pointer within the cycle.

• If the fast pointer reach...read more
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Round duration - 35 minutes
Round difficulty - Medium

This was face to face interview round.

Q1. 
Check Integer Overflow Problem Statement
You are provided with two 32-bit signed integers. Your task is to check whether their multiplication will overflow a 32-bit signed integer limit or not.
An integer...read more
Ans. 
Check if the multiplication of two 32-bit signed integers will cause an overflow.
• Check if the product of A and B exceeds the maximum or minimum value of a 32-bit signed integer.

• Consider the range of 32-bit signed integers (-2^31 to 2^31 - 1) for overflow check.

• Avoid typecasting to other data types while solving the problem.
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Round duration - 20 minutes
Round difficulty - Easy

This was last round and I was interacting with the interviewer without getting nervous.