# Everything You Need to Know About Binary Search

Large data sets with millions of items are common. They can’t find a precise answer or consequence in a dataset without AI’s help. Thus, search algorithms are an important part of AI. They help firms sift through vast amounts of data to find a specific item and its exact location.

Sequential and interval searches are two types of search algorithms. Interval search is also known as binary search. The linear search algorithm iterates over the dataset until it finds the required element. The linear search approach can be used to search unstructured data.

Because the search algorithm examines each item, the results take time. So it’s rarely used. Organizations generally use binary search. Let’s learn when to use binary search algorithms

## What exactly is the Binary Search Algorithm

A binary search algorithm uses interval search to locate a value or element in a sorted array. One can sort an array in periodic, alphabetic, or numeric order.

Here’s an example of a binary search algorithm. Assume you need to search up a word. Because dictionaries are alphabetized, you can use binary search to find a word’s exact placement.

However, to find a specific word in a book of words, you must utilize the linear search technique. A numerical dataset should be ordered ascending or descending to use binary search. If the dataset contains words, organize them alphabetically.

## Binary Search Algorithm Applications

Because of its effectiveness, the binary search algorithm is regarded as one of the greatest searching algorithms. The binary search method has several practical uses, some of which are listed below.

### 1. The Search Tree

The binary search technique is used to extract specific information from massive data sets such as dictionaries and phone books.

### 2. Programming Debugging

When testing a program, if you encounter a bug at a specific event, you can use the binary search method and provide a range to pinpoint the exact location of the bug rather than rerunning the entire code.

### 3. Memory Saving

The binary search tree has a practical purpose in that it saves storage space. Because the method determines a plausible range within a dataset in which an element will be present, it retains only the required values while discarding the others.

## How Do Binary Search Algorithms Work?

Binary search algorithms are simple to put into action. Instead of running through the full search result, the algorithm initially checks the middle element and then proceeds to determine the element’s exact position. Here’s how to understand it.

The binary search method helps to find an element in a numerical dataset, by comparing the middle element in the sorted array.

This generally results in one of three scenarios. In the first scenario, the center element corresponds to the key being searched.

The second possibility is that the essential element is positioned after the middle one. The key element here is placed before the middle element in the sorted array in the last case.

The search would be terminated if the algorithm was looking for the same element in the middle. In the second and third circumstances, however, the algorithm determines if the key element is bigger or less than the middle element. It then searches either the early or final half of the document.

If the element is not discovered in the dataset, the binary search method will return the error ‘dataset not found.’

The binary search technique saves time by first inspecting the middle element. It narrows the search region by determining whether the element will appear in the first or second half.

## Search Operation and Binary Search Tree

Following the binary search algorithm, let’s examine the binary search tree. To speed up searching, binary search separates a sorted array into pieces.

First, learn about data trees in programming. Trees are hierarchical structures with nodes and edges. It’s like the tree’s branches. The parent node is the initial node in the tree, and the child nodes are those that connect to it.

A binary search tree’s parent can have two child nodes. It has three parts: the core data item, the left child node, and the right child node. It is a numerical dataset ordered so that the left node is less than the center element. Similarly, the right node outperforms the middle element.

The binary search tree helps locate the required item. In the midst, there’s a lot to take in It will search the left or right node if the value does not match the element.

If the item’s value is below the center element, only the left node is inspected. If the element’s value exceeds the middle element’s value, we go to the right node. The left one will be discarded.

## Binary Search Algorithm Limitations

Although the binary search technique has some advantages, it also has certain disadvantages.

• A sorted array is required to implement the binary search algorithm. The binary search algorithm cannot be implemented if the dataset is not organized alphabetically or numerically.
• Binary search techniques are not suitable for tiny unsorted arrays since they take a long time to sort the dataset. In such instances, the linear search technique is a better option.
• Because binary search techniques only traverse one area of the collection, they may not provide the exact position of an element as well as linear search algorithms.

## Opportunities for Employment After Learning the Binary Search Algorithm

In computer science, the binary search algorithm is connected to data structures. As a result, if you seek a master’s degree in computer science in data science, you can pursue the following job paths:

• Data engineer or programmer
• Data modeling positions such as experimental design and structured modeling
• Machine learning and recommender systems are examples of data analytics