Javascript · Coding Gym

Reading strings

We can read a single line string using the built-in functions process.stdin:

To fetch data from a stdin you can use process.stdin and send fetching result to a custom parsing function (parsingFunction) Following examples assume you are implementing parsingFunction content

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process.stdin.resume();
process.stdin.setEncoding("ascii");
let fetchedInput = "";
process.stdin.on("data", function (input) {
    fetchedInput += input;
});

process.stdin.on("end", function () {
  // call here your parsing function
  console.log(fetchedInput);
});

Reading an array of integers

When you need to convert a string of integers (eg. 1 2 3) to an array of integers [1, 2, 3] each element to an int:

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parsingFunction = (fetchedInput) => {
  return fetchedInput.split(' ').map((n) => parseInt(n, 10));
}

Reading n rows made up of a single integer

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parsingFunction = (fetchedInput) => {
  return inputString.split(/\r?\n/)
    .map((line) => line.split(' ')
    .map((number) => parseInt(number, 10)))
  }

Writing on STDOUT

When you need to write on stdout use:

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process.stdout.write('output');