In a way, this post is a summary of your data structures analysis class. There are mainly 7-8 data structures that are very common in the coding interviews. In reality, there can be an infinite number of data structures because data structures are just a way to store the data and you can create your own ways of storing data. From the point of view of the coding interview, you are going to get tested on standard data structures and hence you should focus on them. Although I will discuss each data structure in detail in separate posts, you can use this post as a time & space complexity cheatsheet, or as a checklist of different data-structures to study for your interview. … More Key to Solving Every Problem in a Coding Interview – Choose the right tool