http://www.freecodecamp.com/gulzaar 's solution for Bonfire: Return Largest Numbers in Arrays

bonfire-return-largest-numbers-in-arrays.js

// Bonfire: Return Largest Numbers in Arrays
// Author: @gulzaar
// Challenge: http://www.freecodecamp.com/challenges/bonfire-return-largest-numbers-in-arrays
// Learn to Code at Free Code Camp (www.freecodecamp.com)

function largestOfFour(arr) {
  // You can do this!
  
  var mNum = new Array();


for (var row = 0; row <= arr.length-1; row++) {
		mNum[row] = Math.max.apply(0, arr[row]);
	}
  
  return mNum;
}

largestOfFour([[4, 5, 1, 3], [13, 27, 18, 26], [32, 35, 37, 39], [1000, 1001, 857, 1]]);