One of the first data structures we learn about in computer science is an array. Simply put, **an array is a collection of elements stored next to each other.**

In general, the elements in an array are of the same data type. An array is both a primitive data type and a data structure commonly used to implement other data structures such as stacks and queues. To understand the time complexity of array operations, we need to remember that an array requires contiguous space in memory.

Let’s picture this.

Think of a movie theater as your computer’s memory; the seats…

Computer science was developed as a way of leveraging computers to solve mathematical problems quickly. In a general computer science problem, you take some data as an input and return some data as an output.

**The series of computational steps you need to take to turn that input data into an output data is called an algorithm**

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