Observer Design Pattern

If we were asked which the easiest and most widely used design pattern is, it would have to be Observer design pattern. This is one of the interviewer’s most favourite topics and crops up in interviews very frequently. Let’s start with providing you with some examples to make you understand the concepts properly. Say you …

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Mock C++ interview with Amit – how should you prepare for your C++ interviews?

C++ is a high level language and when we are preparing for our interviews we mainly focus only on the data structures and algorithms but apart from that there are a variety of built-in functions and classes which are predefined in the standard C language. So many people code in C++ and make it their …

Mock C++ interview with Amit – how should you prepare for your C++ interviews? Read More »

Singleton Design Pattern

The Singleton Design Pattern is one of the simplest and most widely used design patterns. It is used in so many different situations that all software developers will come across this pattern at one point or another. What happens though is that a lot of the time, we don’t really know the details of the …

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Factory Design Pattern

This is one of the most widely used design patterns, and a really popular question in interviews. Using a really simple example, we’re going to understand why exactly this pattern is useful and how to implement it in code. In the Factory pattern, we create objects without exposing the creation logic to the client and …

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HLD Cheatsheet

Asking questions in an interview is a great way for the interviewer to gauge your skill level, knowledge, and determination. It is important to ask a few vital questions that make the interviewer go, “Hey, this person actually knows their stuff.” And this is especially the case in any High Level System Design round, with …

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