Competitive Coding with JavaScript: Your Complete Setup Guide in Sublime Text 3

Hey LinkedIn Family! ??

Today, I want to share something valuable for all the JavaScript developers who want to dive into competitive coding without switching to C++, Java or Python.

Competitive coding is super popular, and we know C++ is often the go-to language for it because of its speed and control. But what about those of us who are more comfortable with JavaScript? ??No worries! You can set up an efficient JavaScript environment in Sublime Text just like C++ coders use CppFastOlympicCoding package in sublime text. Let me walk you through the process.

Steps to Set Up:

1. First, download Sublime Text 3, Node Js and set the Environment Variables.
2. Press Alt+Shift+3 (Windows) to divide the window into three sections.

1. Now, create three files in each section: script.js, input.in, and output.out.
2. Go to Tools > Build System > New Build System, and name it whatever you like.
3. Next, paste this code into the build system:

{
  "shell_cmd": "node script.js < input.in > output.out",
  "selector": "source.js",
  "working_dir": "${file_path}",
  "path": "C:\\Program Files\\nodejs"
}
// Change the file path and file name accordingly         

Running the Code:

• Now, you can write your code in the script.js file and provide input in the input.in file. Simply press CTRL + B (Windows) to build, and you’ll see the output in output.out.

Sample Code (Explain with Comments):

• Here’s a sample JavaScript file to handle standard input/output

// Set encoding to UTF-8
process.stdin.setEncoding('utf8');

// Initialize an empty string to store inputs
let inputs = "";

// Collect input data
process.stdin.on("data", (data) => {
   inputs += data;
});

// Once input is complete, process it
process.stdin.on("end", () => {
   // Split input by lines and trim whitespace
   let input = inputs.trim().split("\n");

   // First line is the number of test cases
   let testcase = parseInt(input[0]);

   // Iterate over each test case
   for (let i = 1; i <= testcase; ++i) {
      // Parse x and y from input
      let [x, y] = input[i].trim().split(" ").map(Number);
      // Output x and y (replace this with your logic)
      console.log(x, y);
   }
});        

• This is a simple example to demonstrate input/output handling for competitive coding. You can customize this code for your specific problems. The key here is to efficiently handle input and output for multiple test cases.

Conclusion:

• And that’s it! With this setup, you can now compete using JavaScript just as efficiently as in C++. Happy Hacking ??

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