1. Brute Force Approach

A simple approach is to start from the first interval and compare it with all other intervals for overlapping, if it overlaps with any other interval, then remove the other interval from the list and merge the …

The fast and slow pointer technique (also known as the tortoise and hare algorithm) uses two pointers to determine traits about directional data structures. This can be an array, singly-linked list, or a graph. It is often applied to determine …

The Sliding window is a problem-solving technique that aims to reduce the use of nested loop and replace it with a single loop, thereby reducing the time complexity. These problems are easy to solve using a brute force approach in …

String matching strategies or algorithms provide a key role in various real-world problems or applications. A few of its imperative applications are Spell Checkers, Spam Filters, Intrusion Detection System, Search Engines, Plagiarism Detection, Bioinformatics, Digital Forensics and Information Retrieval Systems etc. It is …

Z algorithm is an algorithm for searching a given pattern in a string, which is an efficient algorithm as it has linear time complexity. It has a time complexity of O(m+n), where m is the length of the string and …

Rabin–Karp algorithm or Karp–Rabin algorithm is a string-searching algorithm created by Richard M. Karp and Michael O. Rabin in 1987 that uses hashing to find an exact match of a pattern string in a text. It also checks the pattern …

Tries

A trie, pronounced “try” and also called digital tree or prefix tree, is a special data structure used to store strings that can be visualized like a graph. Comes from the word retrieval. It consists of …

Manacher's algorithm is used to find the longest palindromic substring in linear time. It is required to solve sub-problems of some very hard problems. The problem statement it solves is: Given a string 's' with the length of 'n'. …

Advantages of Array-Based Sequences

• Arrays provide O(1)-time access to an element based on an integer index. The ability to access the kth element for any k in O(1) time is a hallmark advantage of arrays . In …

The Fibonacci sequence is a series of numbers in which each number is the sum of the two that precede it. Starting at 0 and 1, the sequence looks like this: 0, 1, 1, 2, 3, 5, 8, 13, 21, …

Recently, I was browsing on the internet and searching for some Python related concepts and then my browser split in half, asking me if I was “up for a challenge”. After a little googling, I realized this was some sort …

Multithreading enables CPUs to run different parts(threads) of a process concurrently. The threading module comes with the standard Python library. 

Automation of networking is always comes with scale requirement, manage or connect or capture data from so …

Ansible has become a widely adopted tool for application deployment and infrastructure automation projects since its first release in early 2012. It is primarily intended for IT professionals, who use it for application deployment, updates on workstations and …

Network Security protects your network and data from breaches, intrusions and other threats, which involves access control, virus and antivirus software, application security, network analytics, types of network-related security (endpoint, web, wireless), firewalls, VPN encryption and more.
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When dealing with AWS programmatically using the boto3 SDK, we will use two different credentials, an Access Key ID and a Secret Key, to authenticate against the API.You can install the newest version of boto3 using python3 -m …

The Meraki Dashboard API Python library provides all current Meraki Dashboard API calls to interface with the Cisco Meraki cloud-managed platform. 

You can install it via PyPI:
pip install meraki
The Python …

One major drawback of NETCONF is its rather unmodern reliance on Extensible Markup Language (XML) as the language of choice for describing the data as well as the operations you want to carry out. To solve this, the Internet Engineering …

While pyATS and Genie are technically two libraries that pyATS is responsible for device connectivity, test definition, and reporting, and Genie is responsible for high-level capabilities such as parsing command-line interface (CLI) output to structured Python data or defining …

NAPALM (Network Automation and Programmability Abstraction Layer with Multivendor support) is a Python library that implements a set of functions to interact with different router vendor devices using a unified API.
f you wanted to access different …

Netmiko, developed by Kirk Byers, is an open source library designed to simplify SSH management across a wide range of network devices from various vendors including Cisco, Arista, and Juniper Networks. Netmiko is very popular and similar to Paramiko …

When administrating IT devices from a remote location, be it network equipment or servers, SSH has become the standard. With its secure transport and various authentication methods, it's a safe choice that is widely used to this day to …

TCP stands for Transmission Control Protocol a communications standard that enables application programs and computing devices to exchange messages over a network. It is designed to send packets across the internet and ensure the successful delivery of data …

Python provides a good coverage on the low-level networking interface. It all starts with BSD(Berkeley Software Distribution) socket interface. As you can assume, Python has a socket module that gives you the necessary functionality to work with the socket …

The IP address labels a machine's network interface with a numeric identifier, which also identifies the location of the machine, albeit with limited reliability. Domain Name System (DNS) is a core network service that maps the names to the IP addresses …

• Accessing SSH terminals with paramiko                         
• Transferring files through SFTP                              …

E-mail is one of the most popular ways of digital communication. Python has a rich number of built-in libraries for dealing with e-mails.

The mail that you send from your client interface does not reach the …

"Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects", which are data structures that contain data, in the form of attributes, and code, in the form of functions known as methods. A distinguishing feature of objects is that …

-Don't trust data from a browser, API, or any outside sources: This is a fundamental rule. Make sure that you validate and sanitize any outside data.

-Don't keep SECRET_KEY in version control: As a best practice, pick SECRET_KEY from …

Once you have a working website or reusable app, you will want to make it public. Deploying websites is one of the most difficult activities of development with Django, because there are lots of moving parts that you have to …

Like most WSGI-based web frameworks, Django is synchronous. When a client
requests a web page, the request reaches Django through a view and passes through
various lines of code until the rendered web page is returned. As …

There are many different kinds of tests, so many, in fact, that companies often have a dedicated department, called quality assurance (QA), made up of individuals who spend their day testing the software the company developers produce.

we can divide …