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

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

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

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