CountingSort2.js

'use strict';

const fs = require('fs');

process.stdin.resume();
process.stdin.setEncoding('utf-8');

let inputString = '';
let currentLine = 0;

process.stdin.on('data', inputStdin => {
    inputString += inputStdin;
});

process.stdin.on('end', _ => {
    inputString = inputString.replace(/\s*$/, '')
        .split('\n')
        .map(str => str.replace(/\s*$/, ''));

    main();
});

function readLine() {
    return inputString[currentLine++];
}

// Complete the countingSort function below.
function countingSort(arr) {
var ar=[];
var one=[];
for(var i=1;i<=100;i++){
    ar.push (0);
}
console.log(ar);
for(var i=0;i<arr.length ;i++){
    ar[arr[i]]++;
  one.push(arr[i]);
}
one.sort(function(a,b){
  return a-b;
})
return one;
}
function main() {
    const ws = fs.createWriteStream(process.env.OUTPUT_PATH);

    const n = parseInt(readLine(), 10);

    const arr = readLine().split(' ').map(arrTemp => parseInt(arrTemp, 10));

    let result = countingSort(arr);

    ws.write(result.join(" ") + "\n");

    ws.end();
}