opr

<?php
displayNumbers(50);

function displayNumbers($i)
{
	if($i == 0) return;
	echo $i." ";
	displayNumbers($i-1);
}

opr

let fs = require('fs'),
    readline = require('readline');

opr

let fs = require('fs'),
   readline = require('readline');

opr

let inputFile = fs.createReadStream('my-input.txt')

opr

const rl = readline.createInterface({
   input: inputFile,
   output: process.stdout
});

opr

rl.on('line', (input) => {
	//do some code here
});

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rl.on('line', (input) => {
   let splitDimensions = input.split('x');
   console.log( 'Surface area of', input, 'is', calculateSurfaceArea(splitDimensions), 'Volume is', calculateVolume(splitDimensions) );
});

opr

function calculateSurfaceArea(dimensions) {
   let sides = [2 * (dimensions[0] * dimensions[1] ), 2 * (dimensions[1] * dimensions[2]), 2 * (dimensions[0] * dimensions[2] )];
   return sides[0] + sides[1] + sides[2];
}

And the calculateVolume function looks like this

function calculateVolume(dimensions) {
   return dimensions[0] * dimensions[1] * dimensions[2];
}

opr

rl.on('close', () => {
   input.close();
   console.log('file closed');
});

opr

function removeLargest(a, b, c) {
   return a > b ? ( a > c ? [b, c] : [a, b] ) : ( b > c ? [a, c] : [a, b] );
}