Return an array consisting of the largest number from each provided sub-array. For simplicity, the provided array will contain exactly 4 sub-arrays.

gist 4

// Bonfire: Return Largest Numbers in Arrays
// Author: @piqueen314
// 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 newArr=[];
  for(var i=0; i<arr.length; i++){
    var max =0;
    for(var j=0; j< 4; j++){
      if(arr[i][j]>max){
        max=arr[i][j];
        newArr[i]=max;
      }
    }
  }
  return newArr;
}

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