DEV Community: siriusjt99

Getting Started with Competitive Programming(#preparations before Battle)😎

siriusjt99 — Wed, 09 Nov 2022 15:36:32 +0000

1.(EQUIP WEAPON) Choose any well known Programming Language I would prefer C/C++/Java if you want speed then definitely go with the C++…after all you would definitely choose your weapon before fight.

2.(FIND YOUR MAP) Now you need a battleground where you think you can good competitors and challenges just like that you have to start with good coding platforms I'll recommend start with Hackerrank /leetcode and then move on to Codechef ,Codeforces, and you'll get to know further…

3.(GET SOME POWER) Data Structure and Algorithm for efficiency and time complexity …Always try to think most optimal solution as we find the best route to go at the Finish

4.(START MISSION) Practice…Practice…Practice…

👉Some things that you would require regularly while you Code:

1.(PATIENCE) don't get demotivated if it takes more time for you to reach solution you need to patience and gradually you will surely feel the improvement in solving problems.
2.(CONSISTENCY) Please do participate regularly in as many as contest you can, why because participating in the contests you will learn many new topics and will get experienced how to fight with the programmers from across the globe.
3.(YOUR BEST CODING HABIT) the habit which you discover is best for your coding ,this key is made by you.

👉Some links that can help to start:
1.Data Structure and Algorithm

2.Algorithms you must definitely know

3.Algorithms for Competitive programming

✅Conclusion:
So to master the Competitive Programming you need dedication, patience and continuous practice to solve the problems as many as you can.

code...code...code!!!
Have a great day!💜

A Reminder for last few months to 2023

siriusjt99 — Thu, 29 Sep 2022 10:20:30 +0000

Well its almost September ending and only 3 months are left for 2k23🙄.I know we community with full of professionals, specialist, scientist ,freelancers and more... But the most important category which should take these year ending seriously is the 2022 batch graduates who are not yet placed .
The reasons can differ for everyone...
👉maybe you are a student from a Tier III college which don't have appropriate placements.
👉Maybe you have not got that proper mentorship during your college days in graduation.
👉Maybe you spend your whole pandemic by watching series/drama and not utilizing that time for skill furnish
👉Maybe you also spend the time by just hanging around with friends while you were back to college at finals.
👉Maybe it can be anything🤷‍♀️ as I said earlier the reasons differ...huh its tough!!

And if you are preparing whole heartedly you must definitely have been came through this terms...
Data structure , algorithms , and many programming related concepts and yes these all things really play important or you can say these are our Weapons for a Long long long run🏃‍♀️ in this so called War of silicon valley...

Hope so you are working on your skill set and furnishing your weapons for better use...look if you have committed you can do it yaaa some will finish fast and some will slow its all the matter of so called 'SATISFACTION' .

Just don't let your fire turn down man🔥🔥🔥

Thankyou for reading till end 😀
All the best 💜

Frontend Developers skills you must know ✈✨

siriusjt99 — Fri, 23 Sep 2022 12:38:56 +0000

✅1.HTML,CSS and JS
Front-End development without HTML, CSS, and JavaScript is impossible. They play a vital role in making the UI look dynamic and feel great. Let’s discuss each of these a bit more clearly.

HTML (to structure web pages)
CSS(to add beauty to websites)
JavaScript (to program and make websites dynamic and responsive)

✅2.Front-End Frameworks
Frameworks are the tools providing components that are customized to speed up development, and may also include a library. It is a platform/tool to build the front end of your website. In simple terms, frameworks build the layout structure of a building. You should be familiar with the work and ways to use it for faster coding
There are many front-end frameworks like React, Angular, and Vue.js, but React is the most popular, easy, trendy, and most-used framework.

✅3. Responsiveness
When it comes to web development, frontend developers should be aware of the term “responsiveness” which means the websites should be responsive and viewed on any device whether it would be a mobile, laptop, phone, tablet, etc. The web page should have the ability to adjust itself to the device (laptop, tablet, mobile, etc.) used by the users. Based on the platform, the website should adapt appropriately and adjust its appearance and layout to match the device screen’s resolution.
The in-built features of CSS frameworks like Tailwind and Bootstrap help you to make websites more responsive for all device sizes with a little less work.

✅4. Version Control Systems
Version Control System is a system that keeps a record of code changes to a file or set of files over time. They are generally software tools helping the software team to manage changes to source code while also revealing who made which modifications. It is a very helpful skill every front-end developer must-have.

Git (Global Information Tracker) is the most popular, open-source, and distributed version control system where an entire repository can be changed by each user on their system. It uses a command line to install in your system and using Git, it’s easy to undo changes and back and forth with a clear explanation of changes made.

✅5. CSS Pre-Processors
CSS Preprocessor is an advanced version of CSS. It is a program that lets you generate CSS from the preprocessor’s unique syntax. It maintains the code more easily and the long run makes it easy to edit. CSS preprocessors like nesting selector and inheritance selector are some features that don’t exist in pure CSS that can be used which makes the code more organized and more readable by shaving off some of the lines. Writing repetitive code is time-consuming which is more common in working with just CSS. This can be avoided by speeding up CSS coding by using CSS preprocessors which are another element that any front-end developer must use.

✅6. Command Line
The CLI or Command Line Interface is a text-based application for managing files on your system. It plays an important role in web development, also an all-purpose GUI (Graphical User Interface) has limitations for some specific applications. You enter some commands in a terminal and it performs some actions which help in getting some results when working with web development. You should also know the properties of the Shell to access operating system functions via a text interface.

It helps you attain faster management. To conclude, command-line tools open up new ways to make your production and delivery of code in HTML, CSS, and JavaScript languages more efficient.

✅7. Testing and Debugging
After the development process of a web application, the important aspect comes is testing and debugging to make sure that the results are bug-free to provide a good experience to its user. The chances of getting no bugs in the software development process are very rare and for that, the process of testing and debugging is a mandatory one. It’s an additional skill for any front-end developer to develop the quality of your website. Now let’s get clear with the difference between testing and debugging:

Testing is a software practice to ensure the quality and functionality of a web application. Several factors like usability, and compatibility has to be kept in mind while testing. The primary goal of a tester should be that the application should run smoothly without any hindrance. There are various types of testing some of them include Unit testing and Component testing.
Unit Testing tests individual blocks of code, where you check that the website should behave in a proper way as designed to be. Every action is being performed like clicking a button navigates to another page if it has to.
Component Testing examines a particular component and checks individual parts of an application. Here, real data of the written code are tested instead of dummy data by the developers.
There are various other types of testing as well which enhance the working of a website. Other types of testing are Integration Testing, Alpha Testing, Beta Testing, and many more.

Debugging is a process of fixing errors (bugs) found during testing in a web application. This process involves identifying the bug, finding the source of it, and rectifying the problem to make the program error-free and proper functioning of the website. Steps include identifying the error, finding the location, analyzing it, fix and validating it. This process can be done manually or with automated tools. It’s an essential skill needed in a front-end developer as it finds and fixes errors in source code. Also, proper use of breakpoints should be followed to see the flow of code and which easily detects errors line-by-line which helps in understanding the execution of the code.

✅8. Web Performance Optimization
Web optimization generally refers to the time taken by any site to load. Optimizing web pages improves speed, scalability, and smoothness which is necessary for any web application. A website that takes more than 3 seconds to load is generally considered to be less optimized. Multiple factors which cause optimization issues are:

global convergence,
local convergence,

role of the underlying optimization method,
role of the multigrid recursion,
properties of the optimization model.
Steps to improve performance of web:

Minimizing the use of CSS and JavaScript wherever possible.
Using optimized images.
Remove unwanted plugins
If your website is having trouble getting loaded or any such issues, there are steps to improve it.

A good hosting provider.

✅9.DOM Manipulation
DOM (Document Object Model) is a programming interface for web documents. It represents the document as nodes and objects, where programming languages can interact with the page. Using programs, you can change the document structure, style, and content of a web page.

DOM manipulation is interacting with the DOM API to change or modify the HTML document such as adding, removing, editing, and moving elements that are rendered on a web browser. One of the first things to learn when learning JavaScript for web browsers should be DOM manipulation. It represents the structure and the content of any web document which also include styles and HTML part. It allows you to create responsive web experiences. To manipulate an element inside the DOM, the first thing you need to do is to select it and store a reference to it inside a variable. Without refreshing a page, you can update the data and change the layout of the page, and create customizable applications.

✅10. RESTful APIs
REST which stands for representational state transfer uses API (known as RESTful API) which is an application programming interface that allows interaction with RESTful web services. It uses HTTP (HyperText Transfer Protocol) requests to access and manage data. Several commands like GET, PUT, POST, and DELETE data types mean reading, updating, creating, and deleting operations.

Using GET requests to retrieve data,
POST request to create a data,
PUT request to update a data,
DELETE request to delete one in an application.
All HTTP methods can be used in API calls. A well-designed REST API is the same as a website running in a web browser with built-in HTTP functionality.
Refer for tutorial:
https://developer.mozilla.org/en-US/docs/Learn/Front-end_web_developer

🔴That's great✨ if you have it till end😀 !
*Skills are not built in 1 day or 1 week it take lots of practice and implementation in the real-time project responsive websites and hosting them as well.
Just keep going with your passion💜
*

10 Java Coding Tips Every Programmer Should Know🚀😀

siriusjt99 — Sun, 11 Sep 2022 17:52:32 +0000

When you talk about Object Oriented Programming, the best and the most apt example that comes to the mind is Java. Developed by Sun Microsystems, Java leads the way in terms of cross platform programming language and developing application software. The reason Java has gained such a large fan base and unprecedented popularity is because the language deploys a very easy and efficient approach to perform various programming tasks and aid the developers.

Its simplicity can sometimes be a distraction and the highly experienced Java developers have always aimed a notch higher and have tried to explore the different possibilities that the language offers. Being a good Java developer is always within touching distance of any computer programming enthusiast, however; it is standing amongst the very bests that matters.

Below are some tips that might help you grow as a Java developer and gain more knowledge about the language.

1. Get the basics right
As Java offers so many features and options to the developers, people are sometimes lured into learning too many things in too little time. As a result of this, they get ‘bits and pieces’ knowledge of a few options that Java offers, but their basics hang on a loose thread. Trust me when I say this, Java is one programming language which is easy if you have paid attention to the simple basics, however; it can be frustrating if you get greedy and try to take the shorter route forward.

2. Don’t just read
Well, if your sole purpose of learning Java is to clear the exam you have the next day, go ahead and mug up all the things that you can and you might just get the passing marks. However; if you are really serious about learning Java and getting better at it, the best way to do it is not by reading, but by implementing. Gain knowledge and then execute what you have learnt, in the form of code. You can never learn Java if you are not willing to get your hands dirty.

3. Understand your code and algorithm
Even if you are writing a simple code having a ‘if else’ statement, as a beginner, start by realizing the code on a piece of paper. The algorithm and the whole compiler process will look so meaningful once you understand the idea behind the code. Even for experts, the best way to solve a complex problem or to formulate an algorithm to solve a Java program is to break the problem into sub-parts and then try to devise a solution for each sub part. When you start getting the solutions right, you will get the confidence to work more.

4. Do not forget to allocate memory
This tip is particularly useful for those who switch from C, C++ to Java. The memory allocation in Java using the ‘new’ keyword is a necessity as Java is a dynamic programming language. C, C++ does not explicitly have this feature, therefore you must take care while handling array and object declaration in Java. Not using the ‘new’ keyword will show a null pointer exception in the code.

Eg:
int array = new int [5];
👉Note the difference in array declaration in Java and C or C++.

5. Avoid creating useless objects
When you create an object in Java, you use up memory and processor speed from the system. Since object creation is incomplete without allocating memory to it, it is better to keep the object requirements under check and not create unwanted objects in the code.

Eg:
public class vehicles { public List getvehicles(){ if(null == vehicles){ // this ensures that the object is initialised only when its required countries = new ArrayList(); } return vehicles; } }

6. Interface is better than Abstract class
There is no multiple inheritance in Java, and this will be spoon fed to you so many times while learning the language that you will probably never forget it for the rest of your life. However; the tip here in not to remember that there is no multiple inheritance in Java, but the fact that interface will come in handy if you want to implement something like multiple inheritance without using the extends keyword. Remember, in Java, when nothing goes your way, you will always have interface by your side. Abstract class does not always give programmers the liberty of having a variety of methods to work with, however; interface only have abstract methods therefore is does the job of abstract classes and has other advantages as well.

7. Standard library is a bliss
The biggest advantage that Java has over its predecessors, from a programming point of view, is probably its rich set of standard library methods. Using Java’s standard library makes the job of a programmer easy, more efficient and gives a well organised flow to the code. Further, operations can be performed easily on the methods specified in the library.

8. Prefer Primitive classes over Wrapper Class
Wrapper classes are no doubt, of great utility, but they are often slower than primitive classes. Primitive class only has values while the wrapper class stores information about the entire class. Further, since wrapper classes often deal with object values, comparing them like the primitive classes does not give desired results as it ends up comparing objects instead of values stored in it.

Eg:
int num_1 = 10; int num_2 = 10; Integer wrapnum_1 = new Integer(10); Integer wrapnum_2 = new Integer(10); System.out.println(num_1 == num_2); System.out.println(wrapnum_1 == wrapnum_2);
Note: In the above example, the second print statement will not display true because wrapper class objects are getting compared and not their values.

9. Dealing with strings
Since Object oriented programming classifies String as a class, a simple concatenation of two strings might result into the creation of a new string object in Java which eventually affects the memory and speed of the system. It is always better to instantiate a string object directly, without using the constructor for this purpose.

Eg:
String slow = new String ("This string is making the system slow"); //slow instantiation String fast = "This string is better"; //fast instantiation

10. Code, Code, Code
There is so much to learn about Java that you just cannot get over with this programming language and it keeps getting more interesting and amusing, however; it is important to maintain the interest within to learn and the hunger to get better. A programming language like Java can be learnt on our own and with great success, but the only thing that is required is continuous learning and coding to test what you have learnt. Java is a lot like playing a sport; the more you sweat in the practice, less you bleed in the match.

That's great✨that you made it till end!
I Hope this will help you guys😊💜

Useful windows shortcuts to speed up your work

siriusjt99 — Tue, 06 Sep 2022 16:43:52 +0000

Win key shortcuts
Win+D : shows or hides the desktop
Win+S : opens up the windows search bar
Win+L : locks your PC or laptop
Win+E : opens file explorer
Win+I : opens windows settings
Win+(number) : opens the program as its pinned on taskbar

Ctrl key shortcuts
Ctrl+E : opens the search bar of active window
Ctrl+W : closes the window, image or tab
Ctrl+T : opens new browser tab
Ctrl+N : opens new file
Ctrl+Shift+Esc : opens task manager
Ctrl+(number) : switches to the tab respectively
Ctrl+P : prints document
Ctrl+O : opens a file
Ctrl+F : find text
Ctrl+A : select all
Ctrl+Y : redo action
Ctrl+Z : undo action
Ctrl+mouse scroll : zoom in or out in most programs

Other shortcuts
F2 : rename files
Alt+F4 : close the window
F11 : fullscreen
F5 : refresh
Alt+arrowkey : move forward backward in either a browser
or file

Thanks for Reading!💜

Self Motivation for Coding

siriusjt99 — Sat, 03 Sep 2022 18:31:51 +0000

Well most of the individuals choose the STEM👩‍💻 route because it has drastic growth omnipresent🙂 and obviously which gives a decent Monet balance✅.

But apart from that what it gives is a different perspective of observing ,thinking , building ,etc.
And while we are on this path we will come across various set backs , like sometimes going through same and same error😓, can't spot the bug 👽,or even sometime not passing the test cases , or even worst not remembering the syntax😵.

But all you have to do is take a deep breath remember why you have chosen this? why you are here ? why this is your goal ?
have cup of coffee shot☕ and again hustle dude coz you know you are meant for this 🔥.

I hope this will help you guys!😀